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Finding the Fourth Proportional to 283,777.71, 391,616.13 and 156,457.86

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Solution

The fourth proportional to 283,777.71, 391,616.13 and 156,457.86 is: 215,913.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,777.71 : 391,616.13 = 156,457.86 : x
  2. Step 2: Convert to fraction form
    283,777.71/391,616.13 = 156,457.86/x
  3. Step 3: Cross multiply
    283,777.71x = 391,616.13 × 156,457.86
  4. Step 4: Simplify right side
    283,777.71x = 61,271,421,641.28
  5. Step 5: Solve for x
    x = 61,271,421,641.28/283,777.71
  6. Step 6: Final answer
    x = 215,913.44

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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.