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Finding the Fourth Proportional to 90,197.71, 124,473.05 and 49,914.22

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Solution

The fourth proportional to 90,197.71, 124,473.05 and 49,914.22 is: 68,881.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,197.71 : 124,473.05 = 49,914.22 : x
  2. Step 2: Convert to fraction form
    90,197.71/124,473.05 = 49,914.22/x
  3. Step 3: Cross multiply
    90,197.71x = 124,473.05 × 49,914.22
  4. Step 4: Simplify right side
    90,197.71x = 6,212,975,201.77
  5. Step 5: Solve for x
    x = 6,212,975,201.77/90,197.71
  6. Step 6: Final answer
    x = 68,881.74

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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.