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Finding the Fourth Proportional to 70,332.16, 105,505.28 and 25,970.56

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Solution

The fourth proportional to 70,332.16, 105,505.28 and 25,970.56 is: 38,958.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,332.16 : 105,505.28 = 25,970.56 : x
  2. Step 2: Convert to fraction form
    70,332.16/105,505.28 = 25,970.56/x
  3. Step 3: Cross multiply
    70,332.16x = 105,505.28 × 25,970.56
  4. Step 4: Simplify right side
    70,332.16x = 2,740,031,204.56
  5. Step 5: Solve for x
    x = 2,740,031,204.56/70,332.16
  6. Step 6: Final answer
    x = 38,958.44

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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.