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Finding the Fourth Proportional to 70,755.73, 97,639.37 and 38,923.81

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Solution

The fourth proportional to 70,755.73, 97,639.37 and 38,923.81 is: 53,712.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,755.73 : 97,639.37 = 38,923.81 : x
  2. Step 2: Convert to fraction form
    70,755.73/97,639.37 = 38,923.81/x
  3. Step 3: Cross multiply
    70,755.73x = 97,639.37 × 38,923.81
  4. Step 4: Simplify right side
    70,755.73x = 3,800,495,798.20
  5. Step 5: Solve for x
    x = 3,800,495,798.20/70,755.73
  6. Step 6: Final answer
    x = 53,712.91

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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.