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Finding the Fourth Proportional to 6,642,707.40, 9,964,061.10 and 4,375,225.80

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Solution

The fourth proportional to 6,642,707.40, 9,964,061.10 and 4,375,225.80 is: 6,562,838.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,707.40 : 9,964,061.10 = 4,375,225.80 : x
  2. Step 2: Convert to fraction form
    6,642,707.40/9,964,061.10 = 4,375,225.80/x
  3. Step 3: Cross multiply
    6,642,707.40x = 9,964,061.10 × 4,375,225.80
  4. Step 4: Simplify right side
    6,642,707.40x = 43,595,017,197,496.38
  5. Step 5: Solve for x
    x = 43,595,017,197,496.38/6,642,707.40
  6. Step 6: Final answer
    x = 6,562,838.70

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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.