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Finding the Fourth Proportional to 9,990.25, 14,985.90 and 2,594.68

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Solution

The fourth proportional to 9,990.25, 14,985.90 and 2,594.68 is: 3,892.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.25 : 14,985.90 = 2,594.68 : x
  2. Step 2: Convert to fraction form
    9,990.25/14,985.90 = 2,594.68/x
  3. Step 3: Cross multiply
    9,990.25x = 14,985.90 × 2,594.68
  4. Step 4: Simplify right side
    9,990.25x = 38,883,615.01
  5. Step 5: Solve for x
    x = 38,883,615.01/9,990.25
  6. Step 6: Final answer
    x = 3,892.16

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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.