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Finding the Fourth Proportional to 57,605.78, 79,506.16 and 45,759.54

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Solution

The fourth proportional to 57,605.78, 79,506.16 and 45,759.54 is: 63,156.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,605.78 : 79,506.16 = 45,759.54 : x
  2. Step 2: Convert to fraction form
    57,605.78/79,506.16 = 45,759.54/x
  3. Step 3: Cross multiply
    57,605.78x = 79,506.16 × 45,759.54
  4. Step 4: Simplify right side
    57,605.78x = 3,638,165,308.77
  5. Step 5: Solve for x
    x = 3,638,165,308.77/57,605.78
  6. Step 6: Final answer
    x = 63,156.25

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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.