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Finding the Fourth Proportional to 14,900.78, 20,557.20 and 9,598.67

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Solution

The fourth proportional to 14,900.78, 20,557.20 and 9,598.67 is: 13,242.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,900.78 : 20,557.20 = 9,598.67 : x
  2. Step 2: Convert to fraction form
    14,900.78/20,557.20 = 9,598.67/x
  3. Step 3: Cross multiply
    14,900.78x = 20,557.20 × 9,598.67
  4. Step 4: Simplify right side
    14,900.78x = 197,321,676.14
  5. Step 5: Solve for x
    x = 197,321,676.14/14,900.78
  6. Step 6: Final answer
    x = 13,242.38

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Half scale
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Double scale
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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.