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Finding the Fourth Proportional to 99,466.80, 149,281.80 and 98,689.20

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Solution

The fourth proportional to 99,466.80, 149,281.80 and 98,689.20 is: 148,114.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,466.80 : 149,281.80 = 98,689.20 : x
  2. Step 2: Convert to fraction form
    99,466.80/149,281.80 = 98,689.20/x
  3. Step 3: Cross multiply
    99,466.80x = 149,281.80 × 98,689.20
  4. Step 4: Simplify right side
    99,466.80x = 14,732,501,416.56
  5. Step 5: Solve for x
    x = 14,732,501,416.56/99,466.80
  6. Step 6: Final answer
    x = 148,114.76

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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.