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Finding the Fourth Proportional to 283,403.53, 391,100.57 and 156,088.54

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Solution

The fourth proportional to 283,403.53, 391,100.57 and 156,088.54 is: 215,404.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,403.53 : 391,100.57 = 156,088.54 : x
  2. Step 2: Convert to fraction form
    283,403.53/391,100.57 = 156,088.54/x
  3. Step 3: Cross multiply
    283,403.53x = 391,100.57 × 156,088.54
  4. Step 4: Simplify right side
    283,403.53x = 61,046,316,964.47
  5. Step 5: Solve for x
    x = 61,046,316,964.47/283,403.53
  6. Step 6: Final answer
    x = 215,404.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.