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Finding the Fourth Proportional to 99,322.65, 137,068.10 and 60,562.74

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Solution

The fourth proportional to 99,322.65, 137,068.10 and 60,562.74 is: 83,578.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,322.65 : 137,068.10 = 60,562.74 : x
  2. Step 2: Convert to fraction form
    99,322.65/137,068.10 = 60,562.74/x
  3. Step 3: Cross multiply
    99,322.65x = 137,068.10 × 60,562.74
  4. Step 4: Simplify right side
    99,322.65x = 8,301,219,399.78
  5. Step 5: Solve for x
    x = 8,301,219,399.78/99,322.65
  6. Step 6: Final answer
    x = 83,578.31

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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.