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Finding the Fourth Proportional to 98,699.63, 136,205.89 and 53,377.61

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Solution

The fourth proportional to 98,699.63, 136,205.89 and 53,377.61 is: 73,661.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,699.63 : 136,205.89 = 53,377.61 : x
  2. Step 2: Convert to fraction form
    98,699.63/136,205.89 = 53,377.61/x
  3. Step 3: Cross multiply
    98,699.63x = 136,205.89 × 53,377.61
  4. Step 4: Simplify right side
    98,699.63x = 7,270,344,195.09
  5. Step 5: Solve for x
    x = 7,270,344,195.09/98,699.63
  6. Step 6: Final answer
    x = 73,661.32

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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.