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Finding the Fourth Proportional to 522,117.80, 783,176.70 and 167,143.40

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Solution

The fourth proportional to 522,117.80, 783,176.70 and 167,143.40 is: 250,715.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,117.80 : 783,176.70 = 167,143.40 : x
  2. Step 2: Convert to fraction form
    522,117.80/783,176.70 = 167,143.40/x
  3. Step 3: Cross multiply
    522,117.80x = 783,176.70 × 167,143.40
  4. Step 4: Simplify right side
    522,117.80x = 130,902,816,438.78
  5. Step 5: Solve for x
    x = 130,902,816,438.78/522,117.80
  6. Step 6: Final answer
    x = 250,715.10

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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.