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Finding the Fourth Proportional to 70,661.70, 97,505.10 and 40,455.18

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Solution

The fourth proportional to 70,661.70, 97,505.10 and 40,455.18 is: 55,823.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,661.70 : 97,505.10 = 40,455.18 : x
  2. Step 2: Convert to fraction form
    70,661.70/97,505.10 = 40,455.18/x
  3. Step 3: Cross multiply
    70,661.70x = 97,505.10 × 40,455.18
  4. Step 4: Simplify right side
    70,661.70x = 3,944,586,371.42
  5. Step 5: Solve for x
    x = 3,944,586,371.42/70,661.70
  6. Step 6: Final answer
    x = 55,823.54

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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.