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Finding the Fourth Proportional to 61,397.70, 84,728.69 and 34,540.22

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Solution

The fourth proportional to 61,397.70, 84,728.69 and 34,540.22 is: 47,665.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,397.70 : 84,728.69 = 34,540.22 : x
  2. Step 2: Convert to fraction form
    61,397.70/84,728.69 = 34,540.22/x
  3. Step 3: Cross multiply
    61,397.70x = 84,728.69 × 34,540.22
  4. Step 4: Simplify right side
    61,397.70x = 2,926,547,891.08
  5. Step 5: Solve for x
    x = 2,926,547,891.08/61,397.70
  6. Step 6: Final answer
    x = 47,665.43

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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.