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Finding the Fourth Proportional to 66,358.17, 99,478.49 and 47,591.01

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Solution

The fourth proportional to 66,358.17, 99,478.49 and 47,591.01 is: 71,344.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,358.17 : 99,478.49 = 47,591.01 : x
  2. Step 2: Convert to fraction form
    66,358.17/99,478.49 = 47,591.01/x
  3. Step 3: Cross multiply
    66,358.17x = 99,478.49 × 47,591.01
  4. Step 4: Simplify right side
    66,358.17x = 4,734,281,574.42
  5. Step 5: Solve for x
    x = 4,734,281,574.42/66,358.17
  6. Step 6: Final answer
    x = 71,344.37

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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.