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Finding the Fourth Proportional to 70,486.12, 97,272.18 and 38,653.12

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Solution

The fourth proportional to 70,486.12, 97,272.18 and 38,653.12 is: 53,342.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,486.12 : 97,272.18 = 38,653.12 : x
  2. Step 2: Convert to fraction form
    70,486.12/97,272.18 = 38,653.12/x
  3. Step 3: Cross multiply
    70,486.12x = 97,272.18 × 38,653.12
  4. Step 4: Simplify right side
    70,486.12x = 3,759,873,246.20
  5. Step 5: Solve for x
    x = 3,759,873,246.20/70,486.12
  6. Step 6: Final answer
    x = 53,342.04

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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.