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Finding the Fourth Proportional to 71,335.20, 107,068.56 and 36,300

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Solution

The fourth proportional to 71,335.20, 107,068.56 and 36,300 is: 54,483.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,335.20 : 107,068.56 = 36,300 : x
  2. Step 2: Convert to fraction form
    71,335.20/107,068.56 = 36,300/x
  3. Step 3: Cross multiply
    71,335.20x = 107,068.56 × 36,300
  4. Step 4: Simplify right side
    71,335.20x = 3,886,588,728
  5. Step 5: Solve for x
    x = 3,886,588,728/71,335.20
  6. Step 6: Final answer
    x = 54,483.46

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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.