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Finding the Fourth Proportional to 135,459.46, 203,156.52 and 56,530.90

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Solution

The fourth proportional to 135,459.46, 203,156.52 and 56,530.90 is: 84,782.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,459.46 : 203,156.52 = 56,530.90 : x
  2. Step 2: Convert to fraction form
    135,459.46/203,156.52 = 56,530.90/x
  3. Step 3: Cross multiply
    135,459.46x = 203,156.52 × 56,530.90
  4. Step 4: Simplify right side
    135,459.46x = 11,484,620,916.47
  5. Step 5: Solve for x
    x = 11,484,620,916.47/135,459.46
  6. Step 6: Final answer
    x = 84,782.72

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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.