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Finding the Fourth Proportional to 66,784.93, 100,154.33 and 19,387.17

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Solution

The fourth proportional to 66,784.93, 100,154.33 and 19,387.17 is: 29,074.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,784.93 : 100,154.33 = 19,387.17 : x
  2. Step 2: Convert to fraction form
    66,784.93/100,154.33 = 19,387.17/x
  3. Step 3: Cross multiply
    66,784.93x = 100,154.33 × 19,387.17
  4. Step 4: Simplify right side
    66,784.93x = 1,941,708,997.71
  5. Step 5: Solve for x
    x = 1,941,708,997.71/66,784.93
  6. Step 6: Final answer
    x = 29,074.06

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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.