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Finding the Fourth Proportional to 579,626.70, 869,440.05 and 242,609.10

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Solution

The fourth proportional to 579,626.70, 869,440.05 and 242,609.10 is: 363,913.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,626.70 : 869,440.05 = 242,609.10 : x
  2. Step 2: Convert to fraction form
    579,626.70/869,440.05 = 242,609.10/x
  3. Step 3: Cross multiply
    579,626.70x = 869,440.05 × 242,609.10
  4. Step 4: Simplify right side
    579,626.70x = 210,934,068,034.46
  5. Step 5: Solve for x
    x = 210,934,068,034.46/579,626.70
  6. Step 6: Final answer
    x = 363,913.65

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Half scale
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Double scale
Find fourth proportional to 579,627.70, 869,441.55 and 242,610.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.