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Finding the Fourth Proportional to 21,825.92, 32,730.68 and 7,030.86

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Solution

The fourth proportional to 21,825.92, 32,730.68 and 7,030.86 is: 10,543.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,825.92 : 32,730.68 = 7,030.86 : x
  2. Step 2: Convert to fraction form
    21,825.92/32,730.68 = 7,030.86/x
  3. Step 3: Cross multiply
    21,825.92x = 32,730.68 × 7,030.86
  4. Step 4: Simplify right side
    21,825.92x = 230,124,909.27
  5. Step 5: Solve for x
    x = 230,124,909.27/21,825.92
  6. Step 6: Final answer
    x = 10,543.65

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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.