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Finding the Fourth Proportional to 698,106.80, 963,330.60 and 392,166.56

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Solution

The fourth proportional to 698,106.80, 963,330.60 and 392,166.56 is: 541,157.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,106.80 : 963,330.60 = 392,166.56 : x
  2. Step 2: Convert to fraction form
    698,106.80/963,330.60 = 392,166.56/x
  3. Step 3: Cross multiply
    698,106.80x = 963,330.60 × 392,166.56
  4. Step 4: Simplify right side
    698,106.80x = 377,786,047,544.74
  5. Step 5: Solve for x
    x = 377,786,047,544.74/698,106.80
  6. Step 6: Final answer
    x = 541,157.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.