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Finding the Fourth Proportional to 98,697.60, 136,195.20 and 53,985.60

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Solution

The fourth proportional to 98,697.60, 136,195.20 and 53,985.60 is: 74,496.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,697.60 : 136,195.20 = 53,985.60 : x
  2. Step 2: Convert to fraction form
    98,697.60/136,195.20 = 53,985.60/x
  3. Step 3: Cross multiply
    98,697.60x = 136,195.20 × 53,985.60
  4. Step 4: Simplify right side
    98,697.60x = 7,352,579,589.12
  5. Step 5: Solve for x
    x = 7,352,579,589.12/98,697.60
  6. Step 6: Final answer
    x = 74,496.03

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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.