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Finding the Fourth Proportional to 64,157.84, 88,538.69 and 38,690.76

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Solution

The fourth proportional to 64,157.84, 88,538.69 and 38,690.76 is: 53,393.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,157.84 : 88,538.69 = 38,690.76 : x
  2. Step 2: Convert to fraction form
    64,157.84/88,538.69 = 38,690.76/x
  3. Step 3: Cross multiply
    64,157.84x = 88,538.69 × 38,690.76
  4. Step 4: Simplify right side
    64,157.84x = 3,425,629,302.23
  5. Step 5: Solve for x
    x = 3,425,629,302.23/64,157.84
  6. Step 6: Final answer
    x = 53,393.78

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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.