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Finding the Fourth Proportional to 625,611.60, 863,345.16 and 339,130.80

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Solution

The fourth proportional to 625,611.60, 863,345.16 and 339,130.80 is: 468,001.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,611.60 : 863,345.16 = 339,130.80 : x
  2. Step 2: Convert to fraction form
    625,611.60/863,345.16 = 339,130.80/x
  3. Step 3: Cross multiply
    625,611.60x = 863,345.16 × 339,130.80
  4. Step 4: Simplify right side
    625,611.60x = 292,786,934,786.93
  5. Step 5: Solve for x
    x = 292,786,934,786.93/625,611.60
  6. Step 6: Final answer
    x = 468,001.13

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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.