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Finding the Fourth Proportional to 98,641.71, 136,133.87 and 60,401.07

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Solution

The fourth proportional to 98,641.71, 136,133.87 and 60,401.07 is: 83,358.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,641.71 : 136,133.87 = 60,401.07 : x
  2. Step 2: Convert to fraction form
    98,641.71/136,133.87 = 60,401.07/x
  3. Step 3: Cross multiply
    98,641.71x = 136,133.87 × 60,401.07
  4. Step 4: Simplify right side
    98,641.71x = 8,222,631,109.24
  5. Step 5: Solve for x
    x = 8,222,631,109.24/98,641.71
  6. Step 6: Final answer
    x = 83,358.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.