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Finding the Fourth Proportional to 92,771.48, 128,016.18 and 52,488.92

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Solution

The fourth proportional to 92,771.48, 128,016.18 and 52,488.92 is: 72,429.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,771.48 : 128,016.18 = 52,488.92 : x
  2. Step 2: Convert to fraction form
    92,771.48/128,016.18 = 52,488.92/x
  3. Step 3: Cross multiply
    92,771.48x = 128,016.18 × 52,488.92
  4. Step 4: Simplify right side
    92,771.48x = 6,719,431,030.73
  5. Step 5: Solve for x
    x = 6,719,431,030.73/92,771.48
  6. Step 6: Final answer
    x = 72,429.92

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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.