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Finding the Fourth Proportional to 6,642,702.10, 9,964,053.15 and 4,249,249.30

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Solution

The fourth proportional to 6,642,702.10, 9,964,053.15 and 4,249,249.30 is: 6,373,873.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,702.10 : 9,964,053.15 = 4,249,249.30 : x
  2. Step 2: Convert to fraction form
    6,642,702.10/9,964,053.15 = 4,249,249.30/x
  3. Step 3: Cross multiply
    6,642,702.10x = 9,964,053.15 × 4,249,249.30
  4. Step 4: Simplify right side
    6,642,702.10x = 42,339,745,872,800.30
  5. Step 5: Solve for x
    x = 42,339,745,872,800.30/6,642,702.10
  6. Step 6: Final answer
    x = 6,373,873.95

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Double scale
Find fourth proportional to 6,642,703.10, 9,964,054.65 and 4,249,250.30
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.