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Finding the Fourth Proportional to 156,352.35, 215,686.95 and 98,894.89

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Solution

The fourth proportional to 156,352.35, 215,686.95 and 98,894.89 is: 136,424.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,352.35 : 215,686.95 = 98,894.89 : x
  2. Step 2: Convert to fraction form
    156,352.35/215,686.95 = 98,894.89/x
  3. Step 3: Cross multiply
    156,352.35x = 215,686.95 × 98,894.89
  4. Step 4: Simplify right side
    156,352.35x = 21,330,337,194.69
  5. Step 5: Solve for x
    x = 21,330,337,194.69/156,352.35
  6. Step 6: Final answer
    x = 136,424.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.