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Finding the Fourth Proportional to 611,334.27, 916,870.19 and 383,520.15

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Solution

The fourth proportional to 611,334.27, 916,870.19 and 383,520.15 is: 575,197.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,334.27 : 916,870.19 = 383,520.15 : x
  2. Step 2: Convert to fraction form
    611,334.27/916,870.19 = 383,520.15/x
  3. Step 3: Cross multiply
    611,334.27x = 916,870.19 × 383,520.15
  4. Step 4: Simplify right side
    611,334.27x = 351,638,190,881.73
  5. Step 5: Solve for x
    x = 351,638,190,881.73/611,334.27
  6. Step 6: Final answer
    x = 575,197.90

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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.