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Finding the Fourth Proportional to 98,557.20, 147,941.02 and 42,425.10

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Solution

The fourth proportional to 98,557.20, 147,941.02 and 42,425.10 is: 63,682.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,557.20 : 147,941.02 = 42,425.10 : x
  2. Step 2: Convert to fraction form
    98,557.20/147,941.02 = 42,425.10/x
  3. Step 3: Cross multiply
    98,557.20x = 147,941.02 × 42,425.10
  4. Step 4: Simplify right side
    98,557.20x = 6,276,412,567.60
  5. Step 5: Solve for x
    x = 6,276,412,567.60/98,557.20
  6. Step 6: Final answer
    x = 63,682.94

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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.