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Finding the Fourth Proportional to 99,006, 136,572.40 and 58,680.16

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Solution

The fourth proportional to 99,006, 136,572.40 and 58,680.16 is: 80,945.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,006 : 136,572.40 = 58,680.16 : x
  2. Step 2: Convert to fraction form
    99,006/136,572.40 = 58,680.16/x
  3. Step 3: Cross multiply
    99,006x = 136,572.40 × 58,680.16
  4. Step 4: Simplify right side
    99,006x = 8,014,090,283.58
  5. Step 5: Solve for x
    x = 8,014,090,283.58/99,006
  6. Step 6: Final answer
    x = 80,945.50

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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.