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Finding the Fourth Proportional to 6,642,794.60, 9,964,191.90 and 4,249,341.80

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Solution

The fourth proportional to 6,642,794.60, 9,964,191.90 and 4,249,341.80 is: 6,374,012.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,794.60 : 9,964,191.90 = 4,249,341.80 : x
  2. Step 2: Convert to fraction form
    6,642,794.60/9,964,191.90 = 4,249,341.80/x
  3. Step 3: Cross multiply
    6,642,794.60x = 9,964,191.90 × 4,249,341.80
  4. Step 4: Simplify right side
    6,642,794.60x = 42,341,257,143,891.42
  5. Step 5: Solve for x
    x = 42,341,257,143,891.42/6,642,794.60
  6. Step 6: Final answer
    x = 6,374,012.70

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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.