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Finding the Fourth Proportional to 140,818.80, 211,159.08 and 69,659.22

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Solution

The fourth proportional to 140,818.80, 211,159.08 and 69,659.22 is: 104,454.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,818.80 : 211,159.08 = 69,659.22 : x
  2. Step 2: Convert to fraction form
    140,818.80/211,159.08 = 69,659.22/x
  3. Step 3: Cross multiply
    140,818.80x = 211,159.08 × 69,659.22
  4. Step 4: Simplify right side
    140,818.80x = 14,709,176,808.72
  5. Step 5: Solve for x
    x = 14,709,176,808.72/140,818.80
  6. Step 6: Final answer
    x = 104,454.64

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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.