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Finding the Fourth Proportional to 55,542.63, 76,569.09 and 39,599.40

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Solution

The fourth proportional to 55,542.63, 76,569.09 and 39,599.40 is: 54,590.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,542.63 : 76,569.09 = 39,599.40 : x
  2. Step 2: Convert to fraction form
    55,542.63/76,569.09 = 39,599.40/x
  3. Step 3: Cross multiply
    55,542.63x = 76,569.09 × 39,599.40
  4. Step 4: Simplify right side
    55,542.63x = 3,032,090,022.55
  5. Step 5: Solve for x
    x = 3,032,090,022.55/55,542.63
  6. Step 6: Final answer
    x = 54,590.32

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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.