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Finding the Fourth Proportional to 67,754.16, 101,631.30 and 28,289.76

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Solution

The fourth proportional to 67,754.16, 101,631.30 and 28,289.76 is: 42,434.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,754.16 : 101,631.30 = 28,289.76 : x
  2. Step 2: Convert to fraction form
    67,754.16/101,631.30 = 28,289.76/x
  3. Step 3: Cross multiply
    67,754.16x = 101,631.30 × 28,289.76
  4. Step 4: Simplify right side
    67,754.16x = 2,875,125,085.49
  5. Step 5: Solve for x
    x = 2,875,125,085.49/67,754.16
  6. Step 6: Final answer
    x = 42,434.67

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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.