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Finding the Fourth Proportional to 101,492.70, 140,061.68 and 56,174.42

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Solution

The fourth proportional to 101,492.70, 140,061.68 and 56,174.42 is: 77,521.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,492.70 : 140,061.68 = 56,174.42 : x
  2. Step 2: Convert to fraction form
    101,492.70/140,061.68 = 56,174.42/x
  3. Step 3: Cross multiply
    101,492.70x = 140,061.68 × 56,174.42
  4. Step 4: Simplify right side
    101,492.70x = 7,867,883,638.23
  5. Step 5: Solve for x
    x = 7,867,883,638.23/101,492.70
  6. Step 6: Final answer
    x = 77,521.67

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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.