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Finding the Fourth Proportional to 62,784.74, 86,642.92 and 34,490.40

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Solution

The fourth proportional to 62,784.74, 86,642.92 and 34,490.40 is: 47,596.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,784.74 : 86,642.92 = 34,490.40 : x
  2. Step 2: Convert to fraction form
    62,784.74/86,642.92 = 34,490.40/x
  3. Step 3: Cross multiply
    62,784.74x = 86,642.92 × 34,490.40
  4. Step 4: Simplify right side
    62,784.74x = 2,988,348,967.97
  5. Step 5: Solve for x
    x = 2,988,348,967.97/62,784.74
  6. Step 6: Final answer
    x = 47,596.74

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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.