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Finding the Fourth Proportional to 35,811.84, 53,712.80 and 9,518.72

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Solution

The fourth proportional to 35,811.84, 53,712.80 and 9,518.72 is: 14,276.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,811.84 : 53,712.80 = 9,518.72 : x
  2. Step 2: Convert to fraction form
    35,811.84/53,712.80 = 9,518.72/x
  3. Step 3: Cross multiply
    35,811.84x = 53,712.80 × 9,518.72
  4. Step 4: Simplify right side
    35,811.84x = 511,277,103.62
  5. Step 5: Solve for x
    x = 511,277,103.62/35,811.84
  6. Step 6: Final answer
    x = 14,276.76

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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.