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Finding the Fourth Proportional to 94,920.40, 142,402.20 and 55,457.20

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Solution

The fourth proportional to 94,920.40, 142,402.20 and 55,457.20 is: 83,198.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,920.40 : 142,402.20 = 55,457.20 : x
  2. Step 2: Convert to fraction form
    94,920.40/142,402.20 = 55,457.20/x
  3. Step 3: Cross multiply
    94,920.40x = 142,402.20 × 55,457.20
  4. Step 4: Simplify right side
    94,920.40x = 7,897,227,285.84
  5. Step 5: Solve for x
    x = 7,897,227,285.84/94,920.40
  6. Step 6: Final answer
    x = 83,198.42

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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.