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Finding the Fourth Proportional to 79,258.68, 118,895.36 and 28,670.36

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Solution

The fourth proportional to 79,258.68, 118,895.36 and 28,670.36 is: 43,008.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,258.68 : 118,895.36 = 28,670.36 : x
  2. Step 2: Convert to fraction form
    79,258.68/118,895.36 = 28,670.36/x
  3. Step 3: Cross multiply
    79,258.68x = 118,895.36 × 28,670.36
  4. Step 4: Simplify right side
    79,258.68x = 3,408,772,773.53
  5. Step 5: Solve for x
    x = 3,408,772,773.53/79,258.68
  6. Step 6: Final answer
    x = 43,008.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.