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Finding the Fourth Proportional to 48,483.42, 66,945.87 and 31,496.10

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Solution

The fourth proportional to 48,483.42, 66,945.87 and 31,496.10 is: 43,489.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,483.42 : 66,945.87 = 31,496.10 : x
  2. Step 2: Convert to fraction form
    48,483.42/66,945.87 = 31,496.10/x
  3. Step 3: Cross multiply
    48,483.42x = 66,945.87 × 31,496.10
  4. Step 4: Simplify right side
    48,483.42x = 2,108,533,816.11
  5. Step 5: Solve for x
    x = 2,108,533,816.11/48,483.42
  6. Step 6: Final answer
    x = 43,489.79

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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.