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Finding the Fourth Proportional to 150,341.28, 207,470.52 and 86,678.52

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Solution

The fourth proportional to 150,341.28, 207,470.52 and 86,678.52 is: 119,616.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,341.28 : 207,470.52 = 86,678.52 : x
  2. Step 2: Convert to fraction form
    150,341.28/207,470.52 = 86,678.52/x
  3. Step 3: Cross multiply
    150,341.28x = 207,470.52 × 86,678.52
  4. Step 4: Simplify right side
    150,341.28x = 17,983,237,617.23
  5. Step 5: Solve for x
    x = 17,983,237,617.23/150,341.28
  6. Step 6: Final answer
    x = 119,616.10

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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.