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Finding the Fourth Proportional to 186,315.72, 280,728.96 and 153,764.88

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Solution

The fourth proportional to 186,315.72, 280,728.96 and 153,764.88 is: 231,683.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,315.72 : 280,728.96 = 153,764.88 : x
  2. Step 2: Convert to fraction form
    186,315.72/280,728.96 = 153,764.88/x
  3. Step 3: Cross multiply
    186,315.72x = 280,728.96 × 153,764.88
  4. Step 4: Simplify right side
    186,315.72x = 43,166,254,846.92
  5. Step 5: Solve for x
    x = 43,166,254,846.92/186,315.72
  6. Step 6: Final answer
    x = 231,683.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.