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Finding the Fourth Proportional to 173,920.80, 260,881.20 and 111,712.80

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Solution

The fourth proportional to 173,920.80, 260,881.20 and 111,712.80 is: 167,569.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,920.80 : 260,881.20 = 111,712.80 : x
  2. Step 2: Convert to fraction form
    173,920.80/260,881.20 = 111,712.80/x
  3. Step 3: Cross multiply
    173,920.80x = 260,881.20 × 111,712.80
  4. Step 4: Simplify right side
    173,920.80x = 29,143,769,319.36
  5. Step 5: Solve for x
    x = 29,143,769,319.36/173,920.80
  6. Step 6: Final answer
    x = 167,569.20

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1.5x scale

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.