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Finding the Fourth Proportional to 8,219,636.40, 11,532,685.20 and 8,219,636.40

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Solution

The fourth proportional to 8,219,636.40, 11,532,685.20 and 8,219,636.40 is: 11,532,685.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,219,636.40 : 11,532,685.20 = 8,219,636.40 : x
  2. Step 2: Convert to fraction form
    8,219,636.40/11,532,685.20 = 8,219,636.40/x
  3. Step 3: Cross multiply
    8,219,636.40x = 11,532,685.20 × 8,219,636.40
  4. Step 4: Simplify right side
    8,219,636.40x = 94,794,479,059,661.28
  5. Step 5: Solve for x
    x = 94,794,479,059,661.28/8,219,636.40
  6. Step 6: Final answer
    x = 11,532,685.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.