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Finding the Fourth Proportional to 57,710.36, 79,549.32 and 42,554.48

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Solution

The fourth proportional to 57,710.36, 79,549.32 and 42,554.48 is: 58,658.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,710.36 : 79,549.32 = 42,554.48 : x
  2. Step 2: Convert to fraction form
    57,710.36/79,549.32 = 42,554.48/x
  3. Step 3: Cross multiply
    57,710.36x = 79,549.32 × 42,554.48
  4. Step 4: Simplify right side
    57,710.36x = 3,385,179,946.95
  5. Step 5: Solve for x
    x = 3,385,179,946.95/57,710.36
  6. Step 6: Final answer
    x = 58,658.10

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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.