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Finding the Fourth Proportional to 157,116.44, 216,818.88 and 85,495.23

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Solution

The fourth proportional to 157,116.44, 216,818.88 and 85,495.23 is: 117,982.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,116.44 : 216,818.88 = 85,495.23 : x
  2. Step 2: Convert to fraction form
    157,116.44/216,818.88 = 85,495.23/x
  3. Step 3: Cross multiply
    157,116.44x = 216,818.88 × 85,495.23
  4. Step 4: Simplify right side
    157,116.44x = 18,536,979,693.34
  5. Step 5: Solve for x
    x = 18,536,979,693.34/157,116.44
  6. Step 6: Final answer
    x = 117,982.43

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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.