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Finding the Fourth Proportional to 157,563.42, 217,440.09 and 85,943.43

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Solution

The fourth proportional to 157,563.42, 217,440.09 and 85,943.43 is: 118,603.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,563.42 : 217,440.09 = 85,943.43 : x
  2. Step 2: Convert to fraction form
    157,563.42/217,440.09 = 85,943.43/x
  3. Step 3: Cross multiply
    157,563.42x = 217,440.09 × 85,943.43
  4. Step 4: Simplify right side
    157,563.42x = 18,687,547,154.11
  5. Step 5: Solve for x
    x = 18,687,547,154.11/157,563.42
  6. Step 6: Final answer
    x = 118,603.34

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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.