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Finding the Fourth Proportional to 35,288.48, 48,699.24 and 20,384.48

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Solution

The fourth proportional to 35,288.48, 48,699.24 and 20,384.48 is: 28,131.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,288.48 : 48,699.24 = 20,384.48 : x
  2. Step 2: Convert to fraction form
    35,288.48/48,699.24 = 20,384.48/x
  3. Step 3: Cross multiply
    35,288.48x = 48,699.24 × 20,384.48
  4. Step 4: Simplify right side
    35,288.48x = 992,708,683.80
  5. Step 5: Solve for x
    x = 992,708,683.80/35,288.48
  6. Step 6: Final answer
    x = 28,131.24

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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.