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Finding the Fourth Proportional to 98,732.40, 148,133.16 and 28,615.92

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Solution

The fourth proportional to 98,732.40, 148,133.16 and 28,615.92 is: 42,933.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,732.40 : 148,133.16 = 28,615.92 : x
  2. Step 2: Convert to fraction form
    98,732.40/148,133.16 = 28,615.92/x
  3. Step 3: Cross multiply
    98,732.40x = 148,133.16 × 28,615.92
  4. Step 4: Simplify right side
    98,732.40x = 4,238,966,655.91
  5. Step 5: Solve for x
    x = 4,238,966,655.91/98,732.40
  6. Step 6: Final answer
    x = 42,933.90

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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.