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Finding the Fourth Proportional to 108,603.23, 149,866.30 and 63,288.59

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Solution

The fourth proportional to 108,603.23, 149,866.30 and 63,288.59 is: 87,334.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,603.23 : 149,866.30 = 63,288.59 : x
  2. Step 2: Convert to fraction form
    108,603.23/149,866.30 = 63,288.59/x
  3. Step 3: Cross multiply
    108,603.23x = 149,866.30 × 63,288.59
  4. Step 4: Simplify right side
    108,603.23x = 9,484,826,988.29
  5. Step 5: Solve for x
    x = 9,484,826,988.29/108,603.23
  6. Step 6: Final answer
    x = 87,334.67

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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.