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Finding the Fourth Proportional to 22,491.01, 31,038.51 and 13,998.16

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Solution

The fourth proportional to 22,491.01, 31,038.51 and 13,998.16 is: 19,318.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,491.01 : 31,038.51 = 13,998.16 : x
  2. Step 2: Convert to fraction form
    22,491.01/31,038.51 = 13,998.16/x
  3. Step 3: Cross multiply
    22,491.01x = 31,038.51 × 13,998.16
  4. Step 4: Simplify right side
    22,491.01x = 434,482,004.04
  5. Step 5: Solve for x
    x = 434,482,004.04/22,491.01
  6. Step 6: Final answer
    x = 19,318.03

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Double scale
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Similar ratio
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1.5x scale

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.