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Finding the Fourth Proportional to 92,862.59, 128,161.71 and 54,620.32

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Solution

The fourth proportional to 92,862.59, 128,161.71 and 54,620.32 is: 75,382.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,862.59 : 128,161.71 = 54,620.32 : x
  2. Step 2: Convert to fraction form
    92,862.59/128,161.71 = 54,620.32/x
  3. Step 3: Cross multiply
    92,862.59x = 128,161.71 × 54,620.32
  4. Step 4: Simplify right side
    92,862.59x = 7,000,232,698.04
  5. Step 5: Solve for x
    x = 7,000,232,698.04/92,862.59
  6. Step 6: Final answer
    x = 75,382.70

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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.