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Finding the Fourth Proportional to 92,445.84, 127,646.28 and 76,621.68

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Solution

The fourth proportional to 92,445.84, 127,646.28 and 76,621.68 is: 105,796.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,445.84 : 127,646.28 = 76,621.68 : x
  2. Step 2: Convert to fraction form
    92,445.84/127,646.28 = 76,621.68/x
  3. Step 3: Cross multiply
    92,445.84x = 127,646.28 × 76,621.68
  4. Step 4: Simplify right side
    92,445.84x = 9,780,472,419.35
  5. Step 5: Solve for x
    x = 9,780,472,419.35/92,445.84
  6. Step 6: Final answer
    x = 105,796.78

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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.