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Finding the Fourth Proportional to 98,757.96, 136,285.90 and 55,746.51

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Solution

The fourth proportional to 98,757.96, 136,285.90 and 55,746.51 is: 76,930.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,757.96 : 136,285.90 = 55,746.51 : x
  2. Step 2: Convert to fraction form
    98,757.96/136,285.90 = 55,746.51/x
  3. Step 3: Cross multiply
    98,757.96x = 136,285.90 × 55,746.51
  4. Step 4: Simplify right side
    98,757.96x = 7,597,462,605.78
  5. Step 5: Solve for x
    x = 7,597,462,605.78/98,757.96
  6. Step 6: Final answer
    x = 76,930.13

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1.5x scale

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.