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Finding the Fourth Proportional to 66,055.86, 99,098.88 and 28,622.16

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Solution

The fourth proportional to 66,055.86, 99,098.88 and 28,622.16 is: 42,939.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,055.86 : 99,098.88 = 28,622.16 : x
  2. Step 2: Convert to fraction form
    66,055.86/99,098.88 = 28,622.16/x
  3. Step 3: Cross multiply
    66,055.86x = 99,098.88 × 28,622.16
  4. Step 4: Simplify right side
    66,055.86x = 2,836,423,999.18
  5. Step 5: Solve for x
    x = 2,836,423,999.18/66,055.86
  6. Step 6: Final answer
    x = 42,939.78

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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.