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Finding the Fourth Proportional to 515,569.32, 773,660.16 and 278,906.76

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Solution

The fourth proportional to 515,569.32, 773,660.16 and 278,906.76 is: 418,525.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,569.32 : 773,660.16 = 278,906.76 : x
  2. Step 2: Convert to fraction form
    515,569.32/773,660.16 = 278,906.76/x
  3. Step 3: Cross multiply
    515,569.32x = 773,660.16 × 278,906.76
  4. Step 4: Simplify right side
    515,569.32x = 215,779,048,566.68
  5. Step 5: Solve for x
    x = 215,779,048,566.68/515,569.32
  6. Step 6: Final answer
    x = 418,525.77

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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.