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Finding the Fourth Proportional to 665,060.40, 998,512.20 and 524,977.20

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Solution

The fourth proportional to 665,060.40, 998,512.20 and 524,977.20 is: 788,193.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,060.40 : 998,512.20 = 524,977.20 : x
  2. Step 2: Convert to fraction form
    665,060.40/998,512.20 = 524,977.20/x
  3. Step 3: Cross multiply
    665,060.40x = 998,512.20 × 524,977.20
  4. Step 4: Simplify right side
    665,060.40x = 524,196,138,921.84
  5. Step 5: Solve for x
    x = 524,196,138,921.84/665,060.40
  6. Step 6: Final answer
    x = 788,193.28

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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.