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Finding the Fourth Proportional to 173,315.30, 259,972.95 and 156,985.70

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Solution

The fourth proportional to 173,315.30, 259,972.95 and 156,985.70 is: 235,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,315.30 : 259,972.95 = 156,985.70 : x
  2. Step 2: Convert to fraction form
    173,315.30/259,972.95 = 156,985.70/x
  3. Step 3: Cross multiply
    173,315.30x = 259,972.95 × 156,985.70
  4. Step 4: Simplify right side
    173,315.30x = 40,812,035,536.82
  5. Step 5: Solve for x
    x = 40,812,035,536.82/173,315.30
  6. Step 6: Final answer
    x = 235,478.55

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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.