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Finding the Fourth Proportional to 186,235.47, 279,306.95 and 53,116.88

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Solution

The fourth proportional to 186,235.47, 279,306.95 and 53,116.88 is: 79,662.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,235.47 : 279,306.95 = 53,116.88 : x
  2. Step 2: Convert to fraction form
    186,235.47/279,306.95 = 53,116.88/x
  3. Step 3: Cross multiply
    186,235.47x = 279,306.95 × 53,116.88
  4. Step 4: Simplify right side
    186,235.47x = 14,835,912,084.20
  5. Step 5: Solve for x
    x = 14,835,912,084.20/186,235.47
  6. Step 6: Final answer
    x = 79,662.12

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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.