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Finding the Fourth Proportional to 77,392.56, 116,088.84 and 61,908.60

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Solution

The fourth proportional to 77,392.56, 116,088.84 and 61,908.60 is: 92,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,392.56 : 116,088.84 = 61,908.60 : x
  2. Step 2: Convert to fraction form
    77,392.56/116,088.84 = 61,908.60/x
  3. Step 3: Cross multiply
    77,392.56x = 116,088.84 × 61,908.60
  4. Step 4: Simplify right side
    77,392.56x = 7,186,897,560.02
  5. Step 5: Solve for x
    x = 7,186,897,560.02/77,392.56
  6. Step 6: Final answer
    x = 92,862.90

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1.5x scale

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.