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Finding the Fourth Proportional to 19,030.92, 28,535.42 and 7,342.60

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Solution

The fourth proportional to 19,030.92, 28,535.42 and 7,342.60 is: 11,009.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,030.92 : 28,535.42 = 7,342.60 : x
  2. Step 2: Convert to fraction form
    19,030.92/28,535.42 = 7,342.60/x
  3. Step 3: Cross multiply
    19,030.92x = 28,535.42 × 7,342.60
  4. Step 4: Simplify right side
    19,030.92x = 209,524,174.89
  5. Step 5: Solve for x
    x = 209,524,174.89/19,030.92
  6. Step 6: Final answer
    x = 11,009.67

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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.