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Finding the Fourth Proportional to 48,793.36, 67,313.80 and 28,656.40

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Solution

The fourth proportional to 48,793.36, 67,313.80 and 28,656.40 is: 39,533.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,793.36 : 67,313.80 = 28,656.40 : x
  2. Step 2: Convert to fraction form
    48,793.36/67,313.80 = 28,656.40/x
  3. Step 3: Cross multiply
    48,793.36x = 67,313.80 × 28,656.40
  4. Step 4: Simplify right side
    48,793.36x = 1,928,971,178.32
  5. Step 5: Solve for x
    x = 1,928,971,178.32/48,793.36
  6. Step 6: Final answer
    x = 39,533.48

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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.