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Finding the Fourth Proportional to 178,631.76, 267,536.88 and 99,570.90

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Solution

The fourth proportional to 178,631.76, 267,536.88 and 99,570.90 is: 149,127.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,631.76 : 267,536.88 = 99,570.90 : x
  2. Step 2: Convert to fraction form
    178,631.76/267,536.88 = 99,570.90/x
  3. Step 3: Cross multiply
    178,631.76x = 267,536.88 × 99,570.90
  4. Step 4: Simplify right side
    178,631.76x = 26,638,887,924.79
  5. Step 5: Solve for x
    x = 26,638,887,924.79/178,631.76
  6. Step 6: Final answer
    x = 149,127.39

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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.