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Finding the Fourth Proportional to 157,144.25, 216,863.66 and 85,528.91

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Solution

The fourth proportional to 157,144.25, 216,863.66 and 85,528.91 is: 118,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,144.25 : 216,863.66 = 85,528.91 : x
  2. Step 2: Convert to fraction form
    157,144.25/216,863.66 = 85,528.91/x
  3. Step 3: Cross multiply
    157,144.25x = 216,863.66 × 85,528.91
  4. Step 4: Simplify right side
    157,144.25x = 18,548,113,214.39
  5. Step 5: Solve for x
    x = 18,548,113,214.39/157,144.25
  6. Step 6: Final answer
    x = 118,032.40

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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.