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Finding the Fourth Proportional to 71,925.73, 99,300.06 and 63,945.90

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Solution

The fourth proportional to 71,925.73, 99,300.06 and 63,945.90 is: 88,283.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,925.73 : 99,300.06 = 63,945.90 : x
  2. Step 2: Convert to fraction form
    71,925.73/99,300.06 = 63,945.90/x
  3. Step 3: Cross multiply
    71,925.73x = 99,300.06 × 63,945.90
  4. Step 4: Simplify right side
    71,925.73x = 6,349,831,706.75
  5. Step 5: Solve for x
    x = 6,349,831,706.75/71,925.73
  6. Step 6: Final answer
    x = 88,283.18

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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.