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Finding the Fourth Proportional to 571,483.12, 856,947.60 and 172,049.44

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Solution

The fourth proportional to 571,483.12, 856,947.60 and 172,049.44 is: 257,990.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,483.12 : 856,947.60 = 172,049.44 : x
  2. Step 2: Convert to fraction form
    571,483.12/856,947.60 = 172,049.44/x
  3. Step 3: Cross multiply
    571,483.12x = 856,947.60 × 172,049.44
  4. Step 4: Simplify right side
    571,483.12x = 147,437,354,689.34
  5. Step 5: Solve for x
    x = 147,437,354,689.34/571,483.12
  6. Step 6: Final answer
    x = 257,990.74

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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.