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Finding the Fourth Proportional to 346,137.68, 519,439.80 and 156,649.52

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Solution

The fourth proportional to 346,137.68, 519,439.80 and 156,649.52 is: 235,079.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,137.68 : 519,439.80 = 156,649.52 : x
  2. Step 2: Convert to fraction form
    346,137.68/519,439.80 = 156,649.52/x
  3. Step 3: Cross multiply
    346,137.68x = 519,439.80 × 156,649.52
  4. Step 4: Simplify right side
    346,137.68x = 81,369,995,338.90
  5. Step 5: Solve for x
    x = 81,369,995,338.90/346,137.68
  6. Step 6: Final answer
    x = 235,079.85

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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.