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Finding the Fourth Proportional to 58,490.88, 80,724.84 and 38,364.60

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Solution

The fourth proportional to 58,490.88, 80,724.84 and 38,364.60 is: 52,948.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,490.88 : 80,724.84 = 38,364.60 : x
  2. Step 2: Convert to fraction form
    58,490.88/80,724.84 = 38,364.60/x
  3. Step 3: Cross multiply
    58,490.88x = 80,724.84 × 38,364.60
  4. Step 4: Simplify right side
    58,490.88x = 3,096,976,196.66
  5. Step 5: Solve for x
    x = 3,096,976,196.66/58,490.88
  6. Step 6: Final answer
    x = 52,948.02

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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.