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Finding the Fourth Proportional to 35,990.58, 53,985.48 and 12,297.90

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Solution

The fourth proportional to 35,990.58, 53,985.48 and 12,297.90 is: 18,446.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,990.58 : 53,985.48 = 12,297.90 : x
  2. Step 2: Convert to fraction form
    35,990.58/53,985.48 = 12,297.90/x
  3. Step 3: Cross multiply
    35,990.58x = 53,985.48 × 12,297.90
  4. Step 4: Simplify right side
    35,990.58x = 663,908,034.49
  5. Step 5: Solve for x
    x = 663,908,034.49/35,990.58
  6. Step 6: Final answer
    x = 18,446.72

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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.