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Finding the Fourth Proportional to 85,757.43, 118,307.54 and 51,746.96

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Solution

The fourth proportional to 85,757.43, 118,307.54 and 51,746.96 is: 71,388.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,757.43 : 118,307.54 = 51,746.96 : x
  2. Step 2: Convert to fraction form
    85,757.43/118,307.54 = 51,746.96/x
  3. Step 3: Cross multiply
    85,757.43x = 118,307.54 × 51,746.96
  4. Step 4: Simplify right side
    85,757.43x = 6,122,054,689.81
  5. Step 5: Solve for x
    x = 6,122,054,689.81/85,757.43
  6. Step 6: Final answer
    x = 71,388.04

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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.