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Finding the Fourth Proportional to 62,784.47, 86,646.81 and 34,490.45

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Solution

The fourth proportional to 62,784.47, 86,646.81 and 34,490.45 is: 47,599.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,784.47 : 86,646.81 = 34,490.45 : x
  2. Step 2: Convert to fraction form
    62,784.47/86,646.81 = 34,490.45/x
  3. Step 3: Cross multiply
    62,784.47x = 86,646.81 × 34,490.45
  4. Step 4: Simplify right side
    62,784.47x = 2,988,487,034.73
  5. Step 5: Solve for x
    x = 2,988,487,034.73/62,784.47
  6. Step 6: Final answer
    x = 47,599.15

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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.