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Finding the Fourth Proportional to 656,905.40, 985,127.70 and 341,257.40

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Solution

The fourth proportional to 656,905.40, 985,127.70 and 341,257.40 is: 511,766.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,905.40 : 985,127.70 = 341,257.40 : x
  2. Step 2: Convert to fraction form
    656,905.40/985,127.70 = 341,257.40/x
  3. Step 3: Cross multiply
    656,905.40x = 985,127.70 × 341,257.40
  4. Step 4: Simplify right side
    656,905.40x = 336,182,117,569.98
  5. Step 5: Solve for x
    x = 336,182,117,569.98/656,905.40
  6. Step 6: Final answer
    x = 511,766.41

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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.