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Finding the Fourth Proportional to 655,604.20, 983,406.30 and 578,621.80

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Solution

The fourth proportional to 655,604.20, 983,406.30 and 578,621.80 is: 867,932.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,604.20 : 983,406.30 = 578,621.80 : x
  2. Step 2: Convert to fraction form
    655,604.20/983,406.30 = 578,621.80/x
  3. Step 3: Cross multiply
    655,604.20x = 983,406.30 × 578,621.80
  4. Step 4: Simplify right side
    655,604.20x = 569,020,323,437.34
  5. Step 5: Solve for x
    x = 569,020,323,437.34/655,604.20
  6. Step 6: Final answer
    x = 867,932.70

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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.