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Finding the Fourth Proportional to 260,737.78, 391,113.42 and 83,244.64

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Solution

The fourth proportional to 260,737.78, 391,113.42 and 83,244.64 is: 124,869.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,737.78 : 391,113.42 = 83,244.64 : x
  2. Step 2: Convert to fraction form
    260,737.78/391,113.42 = 83,244.64/x
  3. Step 3: Cross multiply
    260,737.78x = 391,113.42 × 83,244.64
  4. Step 4: Simplify right side
    260,737.78x = 32,558,095,847.07
  5. Step 5: Solve for x
    x = 32,558,095,847.07/260,737.78
  6. Step 6: Final answer
    x = 124,869.12

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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.