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Finding the Fourth Proportional to 66,326.04, 99,707.76 and 61,456.32

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Solution

The fourth proportional to 66,326.04, 99,707.76 and 61,456.32 is: 92,387.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,326.04 : 99,707.76 = 61,456.32 : x
  2. Step 2: Convert to fraction form
    66,326.04/99,707.76 = 61,456.32/x
  3. Step 3: Cross multiply
    66,326.04x = 99,707.76 × 61,456.32
  4. Step 4: Simplify right side
    66,326.04x = 6,127,672,005.04
  5. Step 5: Solve for x
    x = 6,127,672,005.04/66,326.04
  6. Step 6: Final answer
    x = 92,387.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.