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Finding the Fourth Proportional to 130,463.84, 179,978.28 and 88,036.04

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Solution

The fourth proportional to 130,463.84, 179,978.28 and 88,036.04 is: 121,448.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,463.84 : 179,978.28 = 88,036.04 : x
  2. Step 2: Convert to fraction form
    130,463.84/179,978.28 = 88,036.04/x
  3. Step 3: Cross multiply
    130,463.84x = 179,978.28 × 88,036.04
  4. Step 4: Simplify right side
    130,463.84x = 15,844,575,057.21
  5. Step 5: Solve for x
    x = 15,844,575,057.21/130,463.84
  6. Step 6: Final answer
    x = 121,448.02

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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.