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Finding the Fourth Proportional to 66,068,405.80, 99,102,608.70 and 17,553,747.40

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Solution

The fourth proportional to 66,068,405.80, 99,102,608.70 and 17,553,747.40 is: 26,330,621.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,068,405.80 : 99,102,608.70 = 17,553,747.40 : x
  2. Step 2: Convert to fraction form
    66,068,405.80/99,102,608.70 = 17,553,747.40/x
  3. Step 3: Cross multiply
    66,068,405.80x = 99,102,608.70 × 17,553,747.40
  4. Step 4: Simplify right side
    66,068,405.80x = 1,739,622,159,800,842.25
  5. Step 5: Solve for x
    x = 1,739,622,159,800,842.25/66,068,405.80
  6. Step 6: Final answer
    x = 26,330,621.10

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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.