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Finding the Fourth Proportional to 70,803.55, 97,708.93 and 38,972.22

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Solution

The fourth proportional to 70,803.55, 97,708.93 and 38,972.22 is: 53,781.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,803.55 : 97,708.93 = 38,972.22 : x
  2. Step 2: Convert to fraction form
    70,803.55/97,708.93 = 38,972.22/x
  3. Step 3: Cross multiply
    70,803.55x = 97,708.93 × 38,972.22
  4. Step 4: Simplify right side
    70,803.55x = 3,807,933,721.06
  5. Step 5: Solve for x
    x = 3,807,933,721.06/70,803.55
  6. Step 6: Final answer
    x = 53,781.68

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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.