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Finding the Fourth Proportional to 119,718, 179,577.90 and 53,140.23

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Solution

The fourth proportional to 119,718, 179,577.90 and 53,140.23 is: 79,710.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,718 : 179,577.90 = 53,140.23 : x
  2. Step 2: Convert to fraction form
    119,718/179,577.90 = 53,140.23/x
  3. Step 3: Cross multiply
    119,718x = 179,577.90 × 53,140.23
  4. Step 4: Simplify right side
    119,718x = 9,542,810,908.92
  5. Step 5: Solve for x
    x = 9,542,810,908.92/119,718
  6. Step 6: Final answer
    x = 79,710.74

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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.