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Finding the Fourth Proportional to 393,350.14, 542,300.57 and 257,149.93

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Solution

The fourth proportional to 393,350.14, 542,300.57 and 257,149.93 is: 354,525.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,350.14 : 542,300.57 = 257,149.93 : x
  2. Step 2: Convert to fraction form
    393,350.14/542,300.57 = 257,149.93/x
  3. Step 3: Cross multiply
    393,350.14x = 542,300.57 × 257,149.93
  4. Step 4: Simplify right side
    393,350.14x = 139,452,551,545.83
  5. Step 5: Solve for x
    x = 139,452,551,545.83/393,350.14
  6. Step 6: Final answer
    x = 354,525.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.