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Finding the Fourth Proportional to 714,990.34, 986,446.59 and 404,850.53

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Solution

The fourth proportional to 714,990.34, 986,446.59 and 404,850.53 is: 558,557.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,990.34 : 986,446.59 = 404,850.53 : x
  2. Step 2: Convert to fraction form
    714,990.34/986,446.59 = 404,850.53/x
  3. Step 3: Cross multiply
    714,990.34x = 986,446.59 × 404,850.53
  4. Step 4: Simplify right side
    714,990.34x = 399,363,427,594.46
  5. Step 5: Solve for x
    x = 399,363,427,594.46/714,990.34
  6. Step 6: Final answer
    x = 558,557.79

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1.5x scale

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.