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Finding the Fourth Proportional to 70,538.96, 97,343.49 and 38,708.39

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Solution

The fourth proportional to 70,538.96, 97,343.49 and 38,708.39 is: 53,417.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,538.96 : 97,343.49 = 38,708.39 : x
  2. Step 2: Convert to fraction form
    70,538.96/97,343.49 = 38,708.39/x
  3. Step 3: Cross multiply
    70,538.96x = 97,343.49 × 38,708.39
  4. Step 4: Simplify right side
    70,538.96x = 3,768,009,774.88
  5. Step 5: Solve for x
    x = 3,768,009,774.88/70,538.96
  6. Step 6: Final answer
    x = 53,417.43

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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.