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Finding the Fourth Proportional to 21,504.90, 32,246.55 and 9,804.90

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Solution

The fourth proportional to 21,504.90, 32,246.55 and 9,804.90 is: 14,702.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,504.90 : 32,246.55 = 9,804.90 : x
  2. Step 2: Convert to fraction form
    21,504.90/32,246.55 = 9,804.90/x
  3. Step 3: Cross multiply
    21,504.90x = 32,246.55 × 9,804.90
  4. Step 4: Simplify right side
    21,504.90x = 316,174,198.10
  5. Step 5: Solve for x
    x = 316,174,198.10/21,504.90
  6. Step 6: Final answer
    x = 14,702.43

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1.5x scale

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.