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Finding the Fourth Proportional to 6,642,686.60, 9,964,029.90 and 4,249,233.80

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Solution

The fourth proportional to 6,642,686.60, 9,964,029.90 and 4,249,233.80 is: 6,373,850.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,686.60 : 9,964,029.90 = 4,249,233.80 : x
  2. Step 2: Convert to fraction form
    6,642,686.60/9,964,029.90 = 4,249,233.80/x
  3. Step 3: Cross multiply
    6,642,686.60x = 9,964,029.90 × 4,249,233.80
  4. Step 4: Simplify right side
    6,642,686.60x = 42,339,492,635,290.62
  5. Step 5: Solve for x
    x = 42,339,492,635,290.62/6,642,686.60
  6. Step 6: Final answer
    x = 6,373,850.70

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Double scale
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Similar ratio
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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.