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Finding the Fourth Proportional to 98,672.75, 136,168.40 and 53,960.75

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Solution

The fourth proportional to 98,672.75, 136,168.40 and 53,960.75 is: 74,465.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,672.75 : 136,168.40 = 53,960.75 : x
  2. Step 2: Convert to fraction form
    98,672.75/136,168.40 = 53,960.75/x
  3. Step 3: Cross multiply
    98,672.75x = 136,168.40 × 53,960.75
  4. Step 4: Simplify right side
    98,672.75x = 7,347,748,990.30
  5. Step 5: Solve for x
    x = 7,347,748,990.30/98,672.75
  6. Step 6: Final answer
    x = 74,465.84

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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.