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Finding the Fourth Proportional to 61,572.80, 84,968.76 and 34,715.07

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Solution

The fourth proportional to 61,572.80, 84,968.76 and 34,715.07 is: 47,905.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,572.80 : 84,968.76 = 34,715.07 : x
  2. Step 2: Convert to fraction form
    61,572.80/84,968.76 = 34,715.07/x
  3. Step 3: Cross multiply
    61,572.80x = 84,968.76 × 34,715.07
  4. Step 4: Simplify right side
    61,572.80x = 2,949,696,451.21
  5. Step 5: Solve for x
    x = 2,949,696,451.21/61,572.80
  6. Step 6: Final answer
    x = 47,905.84

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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.