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Finding the Fourth Proportional to 60,811.02, 91,215.90 and 19,258.02

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Solution

The fourth proportional to 60,811.02, 91,215.90 and 19,258.02 is: 28,886.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,811.02 : 91,215.90 = 19,258.02 : x
  2. Step 2: Convert to fraction form
    60,811.02/91,215.90 = 19,258.02/x
  3. Step 3: Cross multiply
    60,811.02x = 91,215.90 × 19,258.02
  4. Step 4: Simplify right side
    60,811.02x = 1,756,637,626.52
  5. Step 5: Solve for x
    x = 1,756,637,626.52/60,811.02
  6. Step 6: Final answer
    x = 28,886.83

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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.