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Finding the Fourth Proportional to 260,981.60, 391,472.40 and 177,000.80

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Solution

The fourth proportional to 260,981.60, 391,472.40 and 177,000.80 is: 265,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,981.60 : 391,472.40 = 177,000.80 : x
  2. Step 2: Convert to fraction form
    260,981.60/391,472.40 = 177,000.80/x
  3. Step 3: Cross multiply
    260,981.60x = 391,472.40 × 177,000.80
  4. Step 4: Simplify right side
    260,981.60x = 69,290,927,977.92
  5. Step 5: Solve for x
    x = 69,290,927,977.92/260,981.60
  6. Step 6: Final answer
    x = 265,501.20

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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.