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Finding the Fourth Proportional to 461,917.12, 692,934 and 146,261.20

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Solution

The fourth proportional to 461,917.12, 692,934 and 146,261.20 is: 219,410.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,917.12 : 692,934 = 146,261.20 : x
  2. Step 2: Convert to fraction form
    461,917.12/692,934 = 146,261.20/x
  3. Step 3: Cross multiply
    461,917.12x = 692,934 × 146,261.20
  4. Step 4: Simplify right side
    461,917.12x = 101,349,358,360.80
  5. Step 5: Solve for x
    x = 101,349,358,360.80/461,917.12
  6. Step 6: Final answer
    x = 219,410.27

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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.