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Finding the Fourth Proportional to 622,916.60, 934,374.90 and 611,106.80

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Solution

The fourth proportional to 622,916.60, 934,374.90 and 611,106.80 is: 916,660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,916.60 : 934,374.90 = 611,106.80 : x
  2. Step 2: Convert to fraction form
    622,916.60/934,374.90 = 611,106.80/x
  3. Step 3: Cross multiply
    622,916.60x = 934,374.90 × 611,106.80
  4. Step 4: Simplify right side
    622,916.60x = 571,002,855,139.32
  5. Step 5: Solve for x
    x = 571,002,855,139.32/622,916.60
  6. Step 6: Final answer
    x = 916,660.20

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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.