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Finding the Fourth Proportional to 338,273.55, 507,468.95 and 113,655.90

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Solution

The fourth proportional to 338,273.55, 507,468.95 and 113,655.90 is: 170,503.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,273.55 : 507,468.95 = 113,655.90 : x
  2. Step 2: Convert to fraction form
    338,273.55/507,468.95 = 113,655.90/x
  3. Step 3: Cross multiply
    338,273.55x = 507,468.95 × 113,655.90
  4. Step 4: Simplify right side
    338,273.55x = 57,676,840,234.31
  5. Step 5: Solve for x
    x = 57,676,840,234.31/338,273.55
  6. Step 6: Final answer
    x = 170,503.55

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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.