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Finding the Fourth Proportional to 614,437.75, 921,812.15 and 171,205.75

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Solution

The fourth proportional to 614,437.75, 921,812.15 and 171,205.75 is: 256,851.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,437.75 : 921,812.15 = 171,205.75 : x
  2. Step 2: Convert to fraction form
    614,437.75/921,812.15 = 171,205.75/x
  3. Step 3: Cross multiply
    614,437.75x = 921,812.15 × 171,205.75
  4. Step 4: Simplify right side
    614,437.75x = 157,819,540,499.86
  5. Step 5: Solve for x
    x = 157,819,540,499.86/614,437.75
  6. Step 6: Final answer
    x = 256,851.96

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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.