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Finding the Fourth Proportional to 98,561.71, 136,015.22 and 53,239.70

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Solution

The fourth proportional to 98,561.71, 136,015.22 and 53,239.70 is: 73,470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,561.71 : 136,015.22 = 53,239.70 : x
  2. Step 2: Convert to fraction form
    98,561.71/136,015.22 = 53,239.70/x
  3. Step 3: Cross multiply
    98,561.71x = 136,015.22 × 53,239.70
  4. Step 4: Simplify right side
    98,561.71x = 7,241,409,066.55
  5. Step 5: Solve for x
    x = 7,241,409,066.55/98,561.71
  6. Step 6: Final answer
    x = 73,470.81

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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.