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Finding the Fourth Proportional to 98,672.40, 148,007.52 and 39,521.88

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Solution

The fourth proportional to 98,672.40, 148,007.52 and 39,521.88 is: 59,282.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,672.40 : 148,007.52 = 39,521.88 : x
  2. Step 2: Convert to fraction form
    98,672.40/148,007.52 = 39,521.88/x
  3. Step 3: Cross multiply
    98,672.40x = 148,007.52 × 39,521.88
  4. Step 4: Simplify right side
    98,672.40x = 5,849,535,444.54
  5. Step 5: Solve for x
    x = 5,849,535,444.54/98,672.40
  6. Step 6: Final answer
    x = 59,282.39

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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.