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Finding the Fourth Proportional to 70,867.61, 97,797.30 and 39,036.51

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Solution

The fourth proportional to 70,867.61, 97,797.30 and 39,036.51 is: 53,870.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,867.61 : 97,797.30 = 39,036.51 : x
  2. Step 2: Convert to fraction form
    70,867.61/97,797.30 = 39,036.51/x
  3. Step 3: Cross multiply
    70,867.61x = 97,797.30 × 39,036.51
  4. Step 4: Simplify right side
    70,867.61x = 3,817,665,279.42
  5. Step 5: Solve for x
    x = 3,817,665,279.42/70,867.61
  6. Step 6: Final answer
    x = 53,870.39

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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.