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Finding the Fourth Proportional to 461,373.40, 691,314.90 and 261,098.20

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Solution

The fourth proportional to 461,373.40, 691,314.90 and 261,098.20 is: 391,225.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,373.40 : 691,314.90 = 261,098.20 : x
  2. Step 2: Convert to fraction form
    461,373.40/691,314.90 = 261,098.20/x
  3. Step 3: Cross multiply
    461,373.40x = 691,314.90 × 261,098.20
  4. Step 4: Simplify right side
    461,373.40x = 180,501,076,023.18
  5. Step 5: Solve for x
    x = 180,501,076,023.18/461,373.40
  6. Step 6: Final answer
    x = 391,225.58

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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.