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Finding the Fourth Proportional to 15,898.98, 23,848.47 and 7,129.11

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Solution

The fourth proportional to 15,898.98, 23,848.47 and 7,129.11 is: 10,693.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,898.98 : 23,848.47 = 7,129.11 : x
  2. Step 2: Convert to fraction form
    15,898.98/23,848.47 = 7,129.11/x
  3. Step 3: Cross multiply
    15,898.98x = 23,848.47 × 7,129.11
  4. Step 4: Simplify right side
    15,898.98x = 170,018,365.96
  5. Step 5: Solve for x
    x = 170,018,365.96/15,898.98
  6. Step 6: Final answer
    x = 10,693.67

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Similar ratio
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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.