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Finding the Fourth Proportional to 74,097.80, 111,068.94 and 53,309.96

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Solution

The fourth proportional to 74,097.80, 111,068.94 and 53,309.96 is: 79,909.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,097.80 : 111,068.94 = 53,309.96 : x
  2. Step 2: Convert to fraction form
    74,097.80/111,068.94 = 53,309.96/x
  3. Step 3: Cross multiply
    74,097.80x = 111,068.94 × 53,309.96
  4. Step 4: Simplify right side
    74,097.80x = 5,921,080,748.64
  5. Step 5: Solve for x
    x = 5,921,080,748.64/74,097.80
  6. Step 6: Final answer
    x = 79,909.00

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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.