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Finding the Fourth Proportional to 293,046.60, 439,569.90 and 256,888.20

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Solution

The fourth proportional to 293,046.60, 439,569.90 and 256,888.20 is: 385,332.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,046.60 : 439,569.90 = 256,888.20 : x
  2. Step 2: Convert to fraction form
    293,046.60/439,569.90 = 256,888.20/x
  3. Step 3: Cross multiply
    293,046.60x = 439,569.90 × 256,888.20
  4. Step 4: Simplify right side
    293,046.60x = 112,920,320,385.18
  5. Step 5: Solve for x
    x = 112,920,320,385.18/293,046.60
  6. Step 6: Final answer
    x = 385,332.30

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Similar ratio
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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.