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Finding the Fourth Proportional to 186,904.56, 280,080.36 and 112,064.88

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Solution

The fourth proportional to 186,904.56, 280,080.36 and 112,064.88 is: 167,931.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,904.56 : 280,080.36 = 112,064.88 : x
  2. Step 2: Convert to fraction form
    186,904.56/280,080.36 = 112,064.88/x
  3. Step 3: Cross multiply
    186,904.56x = 280,080.36 × 112,064.88
  4. Step 4: Simplify right side
    186,904.56x = 31,387,171,933.76
  5. Step 5: Solve for x
    x = 31,387,171,933.76/186,904.56
  6. Step 6: Final answer
    x = 167,931.55

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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.