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Finding the Fourth Proportional to 611,149.90, 917,052.90 and 256,199.80

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Solution

The fourth proportional to 611,149.90, 917,052.90 and 256,199.80 is: 384,437.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,149.90 : 917,052.90 = 256,199.80 : x
  2. Step 2: Convert to fraction form
    611,149.90/917,052.90 = 256,199.80/x
  3. Step 3: Cross multiply
    611,149.90x = 917,052.90 × 256,199.80
  4. Step 4: Simplify right side
    611,149.90x = 234,948,769,569.42
  5. Step 5: Solve for x
    x = 234,948,769,569.42/611,149.90
  6. Step 6: Final answer
    x = 384,437.22

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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.