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Finding the Fourth Proportional to 91,538.80, 137,077.80 and 60,204.40

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Solution

The fourth proportional to 91,538.80, 137,077.80 and 60,204.40 is: 90,155.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,538.80 : 137,077.80 = 60,204.40 : x
  2. Step 2: Convert to fraction form
    91,538.80/137,077.80 = 60,204.40/x
  3. Step 3: Cross multiply
    91,538.80x = 137,077.80 × 60,204.40
  4. Step 4: Simplify right side
    91,538.80x = 8,252,686,702.32
  5. Step 5: Solve for x
    x = 8,252,686,702.32/91,538.80
  6. Step 6: Final answer
    x = 90,155.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.