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Finding the Fourth Proportional to 52,699.60, 79,041.12 and 17,162.20

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Solution

The fourth proportional to 52,699.60, 79,041.12 and 17,162.20 is: 25,740.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,699.60 : 79,041.12 = 17,162.20 : x
  2. Step 2: Convert to fraction form
    52,699.60/79,041.12 = 17,162.20/x
  3. Step 3: Cross multiply
    52,699.60x = 79,041.12 × 17,162.20
  4. Step 4: Simplify right side
    52,699.60x = 1,356,519,509.66
  5. Step 5: Solve for x
    x = 1,356,519,509.66/52,699.60
  6. Step 6: Final answer
    x = 25,740.60

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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.