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Finding the Fourth Proportional to 57,045.36, 85,569.36 and 19,605.12

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Solution

The fourth proportional to 57,045.36, 85,569.36 and 19,605.12 is: 29,408.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,045.36 : 85,569.36 = 19,605.12 : x
  2. Step 2: Convert to fraction form
    57,045.36/85,569.36 = 19,605.12/x
  3. Step 3: Cross multiply
    57,045.36x = 85,569.36 × 19,605.12
  4. Step 4: Simplify right side
    57,045.36x = 1,677,597,571.12
  5. Step 5: Solve for x
    x = 1,677,597,571.12/57,045.36
  6. Step 6: Final answer
    x = 29,408.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.