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Finding the Fourth Proportional to 260,053.80, 390,080.70 and 225,061.80

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Solution

The fourth proportional to 260,053.80, 390,080.70 and 225,061.80 is: 337,592.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,053.80 : 390,080.70 = 225,061.80 : x
  2. Step 2: Convert to fraction form
    260,053.80/390,080.70 = 225,061.80/x
  3. Step 3: Cross multiply
    260,053.80x = 390,080.70 × 225,061.80
  4. Step 4: Simplify right side
    260,053.80x = 87,792,264,487.26
  5. Step 5: Solve for x
    x = 87,792,264,487.26/260,053.80
  6. Step 6: Final answer
    x = 337,592.70

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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.