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Finding the Fourth Proportional to 344,565.20, 515,827.20 and 256,210.40

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Solution

The fourth proportional to 344,565.20, 515,827.20 and 256,210.40 is: 383,556.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,565.20 : 515,827.20 = 256,210.40 : x
  2. Step 2: Convert to fraction form
    344,565.20/515,827.20 = 256,210.40/x
  3. Step 3: Cross multiply
    344,565.20x = 515,827.20 × 256,210.40
  4. Step 4: Simplify right side
    344,565.20x = 132,160,293,242.88
  5. Step 5: Solve for x
    x = 132,160,293,242.88/344,565.20
  6. Step 6: Final answer
    x = 383,556.71

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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.