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Finding the Fourth Proportional to 60,839.76, 91,068.45 and 38,678.16

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Solution

The fourth proportional to 60,839.76, 91,068.45 and 38,678.16 is: 57,895.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,839.76 : 91,068.45 = 38,678.16 : x
  2. Step 2: Convert to fraction form
    60,839.76/91,068.45 = 38,678.16/x
  3. Step 3: Cross multiply
    60,839.76x = 91,068.45 × 38,678.16
  4. Step 4: Simplify right side
    60,839.76x = 3,522,360,080.05
  5. Step 5: Solve for x
    x = 3,522,360,080.05/60,839.76
  6. Step 6: Final answer
    x = 57,895.69

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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.