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Finding the Fourth Proportional to 717,335.80, 989,560.20 and 445,564.60

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Solution

The fourth proportional to 717,335.80, 989,560.20 and 445,564.60 is: 614,653.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,335.80 : 989,560.20 = 445,564.60 : x
  2. Step 2: Convert to fraction form
    717,335.80/989,560.20 = 445,564.60/x
  3. Step 3: Cross multiply
    717,335.80x = 989,560.20 × 445,564.60
  4. Step 4: Simplify right side
    717,335.80x = 440,912,994,688.92
  5. Step 5: Solve for x
    x = 440,912,994,688.92/717,335.80
  6. Step 6: Final answer
    x = 614,653.55

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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.