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Finding the Fourth Proportional to 643,947.20, 965,920.80 and 594,180.80

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Solution

The fourth proportional to 643,947.20, 965,920.80 and 594,180.80 is: 891,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,947.20 : 965,920.80 = 594,180.80 : x
  2. Step 2: Convert to fraction form
    643,947.20/965,920.80 = 594,180.80/x
  3. Step 3: Cross multiply
    643,947.20x = 965,920.80 × 594,180.80
  4. Step 4: Simplify right side
    643,947.20x = 573,931,593,680.64
  5. Step 5: Solve for x
    x = 573,931,593,680.64/643,947.20
  6. Step 6: Final answer
    x = 891,271.20

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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.