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Finding the Fourth Proportional to 70,659.80, 97,509.41 and 38,828.02

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Solution

The fourth proportional to 70,659.80, 97,509.41 and 38,828.02 is: 53,582.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,659.80 : 97,509.41 = 38,828.02 : x
  2. Step 2: Convert to fraction form
    70,659.80/97,509.41 = 38,828.02/x
  3. Step 3: Cross multiply
    70,659.80x = 97,509.41 × 38,828.02
  4. Step 4: Simplify right side
    70,659.80x = 3,786,097,321.67
  5. Step 5: Solve for x
    x = 3,786,097,321.67/70,659.80
  6. Step 6: Final answer
    x = 53,582.06

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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.