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Finding the Fourth Proportional to 92,718.76, 127,949.60 and 56,406.72

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Solution

The fourth proportional to 92,718.76, 127,949.60 and 56,406.72 is: 77,839.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,718.76 : 127,949.60 = 56,406.72 : x
  2. Step 2: Convert to fraction form
    92,718.76/127,949.60 = 56,406.72/x
  3. Step 3: Cross multiply
    92,718.76x = 127,949.60 × 56,406.72
  4. Step 4: Simplify right side
    92,718.76x = 7,217,217,261.31
  5. Step 5: Solve for x
    x = 7,217,217,261.31/92,718.76
  6. Step 6: Final answer
    x = 77,839.88

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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.