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Finding the Fourth Proportional to 173,220.30, 259,916.85 and 98,397.90

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Solution

The fourth proportional to 173,220.30, 259,916.85 and 98,397.90 is: 147,645.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,220.30 : 259,916.85 = 98,397.90 : x
  2. Step 2: Convert to fraction form
    173,220.30/259,916.85 = 98,397.90/x
  3. Step 3: Cross multiply
    173,220.30x = 259,916.85 × 98,397.90
  4. Step 4: Simplify right side
    173,220.30x = 25,575,272,214.62
  5. Step 5: Solve for x
    x = 25,575,272,214.62/173,220.30
  6. Step 6: Final answer
    x = 147,645.93

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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.