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Finding the Fourth Proportional to 68,403.60, 94,387.80 and 38,184.54

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Solution

The fourth proportional to 68,403.60, 94,387.80 and 38,184.54 is: 52,689.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,403.60 : 94,387.80 = 38,184.54 : x
  2. Step 2: Convert to fraction form
    68,403.60/94,387.80 = 38,184.54/x
  3. Step 3: Cross multiply
    68,403.60x = 94,387.80 × 38,184.54
  4. Step 4: Simplify right side
    68,403.60x = 3,604,154,724.61
  5. Step 5: Solve for x
    x = 3,604,154,724.61/68,403.60
  6. Step 6: Final answer
    x = 52,689.55

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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.