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Finding the Fourth Proportional to 79,319.59, 109,423.31 and 47,482.34

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Solution

The fourth proportional to 79,319.59, 109,423.31 and 47,482.34 is: 65,503.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,319.59 : 109,423.31 = 47,482.34 : x
  2. Step 2: Convert to fraction form
    79,319.59/109,423.31 = 47,482.34/x
  3. Step 3: Cross multiply
    79,319.59x = 109,423.31 × 47,482.34
  4. Step 4: Simplify right side
    79,319.59x = 5,195,674,024.82
  5. Step 5: Solve for x
    x = 5,195,674,024.82/79,319.59
  6. Step 6: Final answer
    x = 65,503.04

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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.