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Finding the Fourth Proportional to 66,458.51, 99,693.17 and 19,711.25

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Solution

The fourth proportional to 66,458.51, 99,693.17 and 19,711.25 is: 29,568.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,458.51 : 99,693.17 = 19,711.25 : x
  2. Step 2: Convert to fraction form
    66,458.51/99,693.17 = 19,711.25/x
  3. Step 3: Cross multiply
    66,458.51x = 99,693.17 × 19,711.25
  4. Step 4: Simplify right side
    66,458.51x = 1,965,076,898.61
  5. Step 5: Solve for x
    x = 1,965,076,898.61/66,458.51
  6. Step 6: Final answer
    x = 29,568.48

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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.