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Finding the Fourth Proportional to 389,360.11, 584,134.16 and 146,203.17

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Solution

The fourth proportional to 389,360.11, 584,134.16 and 146,203.17 is: 219,340.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,360.11 : 584,134.16 = 146,203.17 : x
  2. Step 2: Convert to fraction form
    389,360.11/584,134.16 = 146,203.17/x
  3. Step 3: Cross multiply
    389,360.11x = 584,134.16 × 146,203.17
  4. Step 4: Simplify right side
    389,360.11x = 85,402,266,493.30
  5. Step 5: Solve for x
    x = 85,402,266,493.30/389,360.11
  6. Step 6: Final answer
    x = 219,340.05

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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.