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Finding the Fourth Proportional to 70,395.36, 105,608.58 and 38,789.10

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Solution

The fourth proportional to 70,395.36, 105,608.58 and 38,789.10 is: 58,192.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,395.36 : 105,608.58 = 38,789.10 : x
  2. Step 2: Convert to fraction form
    70,395.36/105,608.58 = 38,789.10/x
  3. Step 3: Cross multiply
    70,395.36x = 105,608.58 × 38,789.10
  4. Step 4: Simplify right side
    70,395.36x = 4,096,461,770.48
  5. Step 5: Solve for x
    x = 4,096,461,770.48/70,395.36
  6. Step 6: Final answer
    x = 58,192.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.