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Finding the Fourth Proportional to 3,124,978.92, 4,686,984.86 and 1,205,610.20

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Solution

The fourth proportional to 3,124,978.92, 4,686,984.86 and 1,205,610.20 is: 1,808,228.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124,978.92 : 4,686,984.86 = 1,205,610.20 : x
  2. Step 2: Convert to fraction form
    3,124,978.92/4,686,984.86 = 1,205,610.20/x
  3. Step 3: Cross multiply
    3,124,978.92x = 4,686,984.86 × 1,205,610.20
  4. Step 4: Simplify right side
    3,124,978.92x = 5,650,676,754,461.57
  5. Step 5: Solve for x
    x = 5,650,676,754,461.57/3,124,978.92
  6. Step 6: Final answer
    x = 1,808,228.76

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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.