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Finding the Fourth Proportional to 66,531.04, 99,812.52 and 22,158.19

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Solution

The fourth proportional to 66,531.04, 99,812.52 and 22,158.19 is: 33,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,531.04 : 99,812.52 = 22,158.19 : x
  2. Step 2: Convert to fraction form
    66,531.04/99,812.52 = 22,158.19/x
  3. Step 3: Cross multiply
    66,531.04x = 99,812.52 × 22,158.19
  4. Step 4: Simplify right side
    66,531.04x = 2,211,664,907.30
  5. Step 5: Solve for x
    x = 2,211,664,907.30/66,531.04
  6. Step 6: Final answer
    x = 33,242.60

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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.