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Finding the Fourth Proportional to 186,499.42, 279,751.80 and 53,379.76

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Solution

The fourth proportional to 186,499.42, 279,751.80 and 53,379.76 is: 80,070.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,499.42 : 279,751.80 = 53,379.76 : x
  2. Step 2: Convert to fraction form
    186,499.42/279,751.80 = 53,379.76/x
  3. Step 3: Cross multiply
    186,499.42x = 279,751.80 × 53,379.76
  4. Step 4: Simplify right side
    186,499.42x = 14,933,083,943.57
  5. Step 5: Solve for x
    x = 14,933,083,943.57/186,499.42
  6. Step 6: Final answer
    x = 80,070.40

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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.