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Finding the Fourth Proportional to 655,610.20, 983,415.30 and 578,627.80

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Solution

The fourth proportional to 655,610.20, 983,415.30 and 578,627.80 is: 867,941.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,610.20 : 983,415.30 = 578,627.80 : x
  2. Step 2: Convert to fraction form
    655,610.20/983,415.30 = 578,627.80/x
  3. Step 3: Cross multiply
    655,610.20x = 983,415.30 × 578,627.80
  4. Step 4: Simplify right side
    655,610.20x = 569,031,431,525.34
  5. Step 5: Solve for x
    x = 569,031,431,525.34/655,610.20
  6. Step 6: Final answer
    x = 867,941.70

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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.