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Finding the Fourth Proportional to 70,223.02, 96,907.75 and 38,391.91

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Solution

The fourth proportional to 70,223.02, 96,907.75 and 38,391.91 is: 52,980.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,223.02 : 96,907.75 = 38,391.91 : x
  2. Step 2: Convert to fraction form
    70,223.02/96,907.75 = 38,391.91/x
  3. Step 3: Cross multiply
    70,223.02x = 96,907.75 × 38,391.91
  4. Step 4: Simplify right side
    70,223.02x = 3,720,473,616.30
  5. Step 5: Solve for x
    x = 3,720,473,616.30/70,223.02
  6. Step 6: Final answer
    x = 52,980.83

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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.