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Finding the Fourth Proportional to 77,398.88, 106,812.07 and 43,864.88

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Solution

The fourth proportional to 77,398.88, 106,812.07 and 43,864.88 is: 60,534.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,398.88 : 106,812.07 = 43,864.88 : x
  2. Step 2: Convert to fraction form
    77,398.88/106,812.07 = 43,864.88/x
  3. Step 3: Cross multiply
    77,398.88x = 106,812.07 × 43,864.88
  4. Step 4: Simplify right side
    77,398.88x = 4,685,297,989.38
  5. Step 5: Solve for x
    x = 4,685,297,989.38/77,398.88
  6. Step 6: Final answer
    x = 60,534.45

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1.5x scale

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.