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Finding the Fourth Proportional to 92,079.84, 127,064.80 and 51,242.88

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Solution

The fourth proportional to 92,079.84, 127,064.80 and 51,242.88 is: 70,712.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,079.84 : 127,064.80 = 51,242.88 : x
  2. Step 2: Convert to fraction form
    92,079.84/127,064.80 = 51,242.88/x
  3. Step 3: Cross multiply
    92,079.84x = 127,064.80 × 51,242.88
  4. Step 4: Simplify right side
    92,079.84x = 6,511,166,298.62
  5. Step 5: Solve for x
    x = 6,511,166,298.62/92,079.84
  6. Step 6: Final answer
    x = 70,712.18

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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.