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Finding the Fourth Proportional to 70,184.07, 96,859.77 and 39,978.84

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Solution

The fourth proportional to 70,184.07, 96,859.77 and 39,978.84 is: 55,174.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,184.07 : 96,859.77 = 39,978.84 : x
  2. Step 2: Convert to fraction form
    70,184.07/96,859.77 = 39,978.84/x
  3. Step 3: Cross multiply
    70,184.07x = 96,859.77 × 39,978.84
  4. Step 4: Simplify right side
    70,184.07x = 3,872,341,247.27
  5. Step 5: Solve for x
    x = 3,872,341,247.27/70,184.07
  6. Step 6: Final answer
    x = 55,174.08

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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.