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Finding the Fourth Proportional to 66,284.78, 99,412.25 and 18,898.92

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Solution

The fourth proportional to 66,284.78, 99,412.25 and 18,898.92 is: 28,344.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,284.78 : 99,412.25 = 18,898.92 : x
  2. Step 2: Convert to fraction form
    66,284.78/99,412.25 = 18,898.92/x
  3. Step 3: Cross multiply
    66,284.78x = 99,412.25 × 18,898.92
  4. Step 4: Simplify right side
    66,284.78x = 1,878,784,065.28
  5. Step 5: Solve for x
    x = 1,878,784,065.28/66,284.78
  6. Step 6: Final answer
    x = 28,344.13

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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.