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Finding the Fourth Proportional to 70,991.94, 97,967.52 and 38,726.94

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Solution

The fourth proportional to 70,991.94, 97,967.52 and 38,726.94 is: 53,442.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,991.94 : 97,967.52 = 38,726.94 : x
  2. Step 2: Convert to fraction form
    70,991.94/97,967.52 = 38,726.94/x
  3. Step 3: Cross multiply
    70,991.94x = 97,967.52 × 38,726.94
  4. Step 4: Simplify right side
    70,991.94x = 3,793,982,268.99
  5. Step 5: Solve for x
    x = 3,793,982,268.99/70,991.94
  6. Step 6: Final answer
    x = 53,442.44

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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.