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Finding the Fourth Proportional to 6,492,671.40, 9,739,007.10 and 3,126,066.60

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Solution

The fourth proportional to 6,492,671.40, 9,739,007.10 and 3,126,066.60 is: 4,689,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,492,671.40 : 9,739,007.10 = 3,126,066.60 : x
  2. Step 2: Convert to fraction form
    6,492,671.40/9,739,007.10 = 3,126,066.60/x
  3. Step 3: Cross multiply
    6,492,671.40x = 9,739,007.10 × 3,126,066.60
  4. Step 4: Simplify right side
    6,492,671.40x = 30,444,784,812,472.86
  5. Step 5: Solve for x
    x = 30,444,784,812,472.86/6,492,671.40
  6. Step 6: Final answer
    x = 4,689,099.90

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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.