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Finding the Fourth Proportional to 98,612.70, 136,001.70 and 83,373.56

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Solution

The fourth proportional to 98,612.70, 136,001.70 and 83,373.56 is: 114,984.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,612.70 : 136,001.70 = 83,373.56 : x
  2. Step 2: Convert to fraction form
    98,612.70/136,001.70 = 83,373.56/x
  3. Step 3: Cross multiply
    98,612.70x = 136,001.70 × 83,373.56
  4. Step 4: Simplify right side
    98,612.70x = 11,338,945,895.05
  5. Step 5: Solve for x
    x = 11,338,945,895.05/98,612.70
  6. Step 6: Final answer
    x = 114,984.64

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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.