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Finding the Fourth Proportional to 98,040.88, 147,109.92 and 38,875.28

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Solution

The fourth proportional to 98,040.88, 147,109.92 and 38,875.28 is: 58,332.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,040.88 : 147,109.92 = 38,875.28 : x
  2. Step 2: Convert to fraction form
    98,040.88/147,109.92 = 38,875.28/x
  3. Step 3: Cross multiply
    98,040.88x = 147,109.92 × 38,875.28
  4. Step 4: Simplify right side
    98,040.88x = 5,718,939,330.78
  5. Step 5: Solve for x
    x = 5,718,939,330.78/98,040.88
  6. Step 6: Final answer
    x = 58,332.19

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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.