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Finding the Fourth Proportional to 70,222.58, 96,907.15 and 38,391.47

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Solution

The fourth proportional to 70,222.58, 96,907.15 and 38,391.47 is: 52,980.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,222.58 : 96,907.15 = 38,391.47 : x
  2. Step 2: Convert to fraction form
    70,222.58/96,907.15 = 38,391.47/x
  3. Step 3: Cross multiply
    70,222.58x = 96,907.15 × 38,391.47
  4. Step 4: Simplify right side
    70,222.58x = 3,720,407,868.87
  5. Step 5: Solve for x
    x = 3,720,407,868.87/70,222.58
  6. Step 6: Final answer
    x = 52,980.22

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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.