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Finding the Fourth Proportional to 714,712.72, 986,765.12 and 443,070.92

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Solution

The fourth proportional to 714,712.72, 986,765.12 and 443,070.92 is: 611,724.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,712.72 : 986,765.12 = 443,070.92 : x
  2. Step 2: Convert to fraction form
    714,712.72/986,765.12 = 443,070.92/x
  3. Step 3: Cross multiply
    714,712.72x = 986,765.12 × 443,070.92
  4. Step 4: Simplify right side
    714,712.72x = 437,206,929,542.31
  5. Step 5: Solve for x
    x = 437,206,929,542.31/714,712.72
  6. Step 6: Final answer
    x = 611,724.01

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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.