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Finding the Fourth Proportional to 66,417.20, 99,674.40 and 44,223.20

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Solution

The fourth proportional to 66,417.20, 99,674.40 and 44,223.20 is: 66,367.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,417.20 : 99,674.40 = 44,223.20 : x
  2. Step 2: Convert to fraction form
    66,417.20/99,674.40 = 44,223.20/x
  3. Step 3: Cross multiply
    66,417.20x = 99,674.40 × 44,223.20
  4. Step 4: Simplify right side
    66,417.20x = 4,407,920,926.08
  5. Step 5: Solve for x
    x = 4,407,920,926.08/66,417.20
  6. Step 6: Final answer
    x = 66,367.16

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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.