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Finding the Fourth Proportional to 14,495.72, 21,726.78 and 6,688.28

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Solution

The fourth proportional to 14,495.72, 21,726.78 and 6,688.28 is: 10,024.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,495.72 : 21,726.78 = 6,688.28 : x
  2. Step 2: Convert to fraction form
    14,495.72/21,726.78 = 6,688.28/x
  3. Step 3: Cross multiply
    14,495.72x = 21,726.78 × 6,688.28
  4. Step 4: Simplify right side
    14,495.72x = 145,314,788.14
  5. Step 5: Solve for x
    x = 145,314,788.14/14,495.72
  6. Step 6: Final answer
    x = 10,024.67

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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.