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Finding the Fourth Proportional to 98,674.20, 136,169.10 and 53,962.20

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Solution

The fourth proportional to 98,674.20, 136,169.10 and 53,962.20 is: 74,467.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,674.20 : 136,169.10 = 53,962.20 : x
  2. Step 2: Convert to fraction form
    98,674.20/136,169.10 = 53,962.20/x
  3. Step 3: Cross multiply
    98,674.20x = 136,169.10 × 53,962.20
  4. Step 4: Simplify right side
    98,674.20x = 7,347,984,208.02
  5. Step 5: Solve for x
    x = 7,347,984,208.02/98,674.20
  6. Step 6: Final answer
    x = 74,467.13

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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.