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Finding the Fourth Proportional to 156,273.53, 215,657.45 and 84,653.54

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Solution

The fourth proportional to 156,273.53, 215,657.45 and 84,653.54 is: 116,821.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,273.53 : 215,657.45 = 84,653.54 : x
  2. Step 2: Convert to fraction form
    156,273.53/215,657.45 = 84,653.54/x
  3. Step 3: Cross multiply
    156,273.53x = 215,657.45 × 84,653.54
  4. Step 4: Simplify right side
    156,273.53x = 18,256,165,068.32
  5. Step 5: Solve for x
    x = 18,256,165,068.32/156,273.53
  6. Step 6: Final answer
    x = 116,821.87

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1.5x scale

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.