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Finding the Fourth Proportional to 104,428, 144,119.28 and 59,724.64

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Solution

The fourth proportional to 104,428, 144,119.28 and 59,724.64 is: 82,424.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,428 : 144,119.28 = 59,724.64 : x
  2. Step 2: Convert to fraction form
    104,428/144,119.28 = 59,724.64/x
  3. Step 3: Cross multiply
    104,428x = 144,119.28 × 59,724.64
  4. Step 4: Simplify right side
    104,428x = 8,607,472,115.06
  5. Step 5: Solve for x
    x = 8,607,472,115.06/104,428
  6. Step 6: Final answer
    x = 82,424.94

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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.