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Finding the Fourth Proportional to 70,686.64, 97,548.78 and 38,856.88

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Solution

The fourth proportional to 70,686.64, 97,548.78 and 38,856.88 is: 53,623.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,686.64 : 97,548.78 = 38,856.88 : x
  2. Step 2: Convert to fraction form
    70,686.64/97,548.78 = 38,856.88/x
  3. Step 3: Cross multiply
    70,686.64x = 97,548.78 × 38,856.88
  4. Step 4: Simplify right side
    70,686.64x = 3,790,441,238.61
  5. Step 5: Solve for x
    x = 3,790,441,238.61/70,686.64
  6. Step 6: Final answer
    x = 53,623.16

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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.