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Finding the Fourth Proportional to 632,543.40, 948,815.10 and 258,834.60

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Solution

The fourth proportional to 632,543.40, 948,815.10 and 258,834.60 is: 388,251.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,543.40 : 948,815.10 = 258,834.60 : x
  2. Step 2: Convert to fraction form
    632,543.40/948,815.10 = 258,834.60/x
  3. Step 3: Cross multiply
    632,543.40x = 948,815.10 × 258,834.60
  4. Step 4: Simplify right side
    632,543.40x = 245,586,176,882.46
  5. Step 5: Solve for x
    x = 245,586,176,882.46/632,543.40
  6. Step 6: Final answer
    x = 388,251.90

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Double scale
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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.