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Finding the Fourth Proportional to 622,915.60, 934,373.40 and 611,105.80

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Solution

The fourth proportional to 622,915.60, 934,373.40 and 611,105.80 is: 916,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,915.60 : 934,373.40 = 611,105.80 : x
  2. Step 2: Convert to fraction form
    622,915.60/934,373.40 = 611,105.80/x
  3. Step 3: Cross multiply
    622,915.60x = 934,373.40 × 611,105.80
  4. Step 4: Simplify right side
    622,915.60x = 571,001,004,105.72
  5. Step 5: Solve for x
    x = 571,001,004,105.72/622,915.60
  6. Step 6: Final answer
    x = 916,658.70

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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.