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Finding the Fourth Proportional to 92,808.38, 128,068.46 and 54,569.48

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Solution

The fourth proportional to 92,808.38, 128,068.46 and 54,569.48 is: 75,301.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,808.38 : 128,068.46 = 54,569.48 : x
  2. Step 2: Convert to fraction form
    92,808.38/128,068.46 = 54,569.48/x
  3. Step 3: Cross multiply
    92,808.38x = 128,068.46 × 54,569.48
  4. Step 4: Simplify right side
    92,808.38x = 6,988,629,266.60
  5. Step 5: Solve for x
    x = 6,988,629,266.60/92,808.38
  6. Step 6: Final answer
    x = 75,301.71

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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.