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Finding the Fourth Proportional to 98,793.16, 136,347.54 and 56,341.96

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Solution

The fourth proportional to 98,793.16, 136,347.54 and 56,341.96 is: 77,759.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,793.16 : 136,347.54 = 56,341.96 : x
  2. Step 2: Convert to fraction form
    98,793.16/136,347.54 = 56,341.96/x
  3. Step 3: Cross multiply
    98,793.16x = 136,347.54 × 56,341.96
  4. Step 4: Simplify right side
    98,793.16x = 7,682,087,644.78
  5. Step 5: Solve for x
    x = 7,682,087,644.78/98,793.16
  6. Step 6: Final answer
    x = 77,759.31

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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.