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Finding the Fourth Proportional to 14,772.60, 22,158.90 and 14,189.40

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Solution

The fourth proportional to 14,772.60, 22,158.90 and 14,189.40 is: 21,284.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,772.60 : 22,158.90 = 14,189.40 : x
  2. Step 2: Convert to fraction form
    14,772.60/22,158.90 = 14,189.40/x
  3. Step 3: Cross multiply
    14,772.60x = 22,158.90 × 14,189.40
  4. Step 4: Simplify right side
    14,772.60x = 314,421,495.66
  5. Step 5: Solve for x
    x = 314,421,495.66/14,772.60
  6. Step 6: Final answer
    x = 21,284.10

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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.