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Finding the Fourth Proportional to 188,931.59, 260,713.59 and 104,048.65

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Solution

The fourth proportional to 188,931.59, 260,713.59 and 104,048.65 is: 143,580.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,931.59 : 260,713.59 = 104,048.65 : x
  2. Step 2: Convert to fraction form
    188,931.59/260,713.59 = 104,048.65/x
  3. Step 3: Cross multiply
    188,931.59x = 260,713.59 × 104,048.65
  4. Step 4: Simplify right side
    188,931.59x = 27,126,897,011.86
  5. Step 5: Solve for x
    x = 27,126,897,011.86/188,931.59
  6. Step 6: Final answer
    x = 143,580.53

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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.