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Finding the Fourth Proportional to 6,644,231.40, 9,966,347.10 and 6,518,260.20

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Solution

The fourth proportional to 6,644,231.40, 9,966,347.10 and 6,518,260.20 is: 9,777,390.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,644,231.40 : 9,966,347.10 = 6,518,260.20 : x
  2. Step 2: Convert to fraction form
    6,644,231.40/9,966,347.10 = 6,518,260.20/x
  3. Step 3: Cross multiply
    6,644,231.40x = 9,966,347.10 × 6,518,260.20
  4. Step 4: Simplify right side
    6,644,231.40x = 64,963,243,641,315.42
  5. Step 5: Solve for x
    x = 64,963,243,641,315.42/6,644,231.40
  6. Step 6: Final answer
    x = 9,777,390.30

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Double scale
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Similar ratio
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1.5x scale

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.