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Finding the Fourth Proportional to 614,321.39, 921,509.74 and 235,143.78

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Solution

The fourth proportional to 614,321.39, 921,509.74 and 235,143.78 is: 352,726.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,321.39 : 921,509.74 = 235,143.78 : x
  2. Step 2: Convert to fraction form
    614,321.39/921,509.74 = 235,143.78/x
  3. Step 3: Cross multiply
    614,321.39x = 921,509.74 × 235,143.78
  4. Step 4: Simplify right side
    614,321.39x = 216,687,280,408.69
  5. Step 5: Solve for x
    x = 216,687,280,408.69/614,321.39
  6. Step 6: Final answer
    x = 352,726.25

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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.