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Finding the Fourth Proportional to 35,686.50, 49,246.65 and 20,579.82

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Solution

The fourth proportional to 35,686.50, 49,246.65 and 20,579.82 is: 28,399.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,686.50 : 49,246.65 = 20,579.82 : x
  2. Step 2: Convert to fraction form
    35,686.50/49,246.65 = 20,579.82/x
  3. Step 3: Cross multiply
    35,686.50x = 49,246.65 × 20,579.82
  4. Step 4: Simplify right side
    35,686.50x = 1,013,487,192.60
  5. Step 5: Solve for x
    x = 1,013,487,192.60/35,686.50
  6. Step 6: Final answer
    x = 28,399.74

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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.