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Finding the Fourth Proportional to 57,785.10, 86,677.65 and 57,785.10

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Solution

The fourth proportional to 57,785.10, 86,677.65 and 57,785.10 is: 86,677.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,785.10 : 86,677.65 = 57,785.10 : x
  2. Step 2: Convert to fraction form
    57,785.10/86,677.65 = 57,785.10/x
  3. Step 3: Cross multiply
    57,785.10x = 86,677.65 × 57,785.10
  4. Step 4: Simplify right side
    57,785.10x = 5,008,676,673.02
  5. Step 5: Solve for x
    x = 5,008,676,673.02/57,785.10
  6. Step 6: Final answer
    x = 86,677.65

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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.