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Finding the Fourth Proportional to 77,490.84, 116,081.46 and 59,499.48

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Solution

The fourth proportional to 77,490.84, 116,081.46 and 59,499.48 is: 89,130.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,490.84 : 116,081.46 = 59,499.48 : x
  2. Step 2: Convert to fraction form
    77,490.84/116,081.46 = 59,499.48/x
  3. Step 3: Cross multiply
    77,490.84x = 116,081.46 × 59,499.48
  4. Step 4: Simplify right side
    77,490.84x = 6,906,786,507.64
  5. Step 5: Solve for x
    x = 6,906,786,507.64/77,490.84
  6. Step 6: Final answer
    x = 89,130.36

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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.