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Finding the Fourth Proportional to 79,313.40, 109,461.64 and 47,482.28

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Solution

The fourth proportional to 79,313.40, 109,461.64 and 47,482.28 is: 65,531.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,313.40 : 109,461.64 = 47,482.28 : x
  2. Step 2: Convert to fraction form
    79,313.40/109,461.64 = 47,482.28/x
  3. Step 3: Cross multiply
    79,313.40x = 109,461.64 × 47,482.28
  4. Step 4: Simplify right side
    79,313.40x = 5,197,488,239.74
  5. Step 5: Solve for x
    x = 5,197,488,239.74/79,313.40
  6. Step 6: Final answer
    x = 65,531.02

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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.