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Finding the Fourth Proportional to 11,726,435.66, 17,591,978.40 and 3,639,066.08

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Solution

The fourth proportional to 11,726,435.66, 17,591,978.40 and 3,639,066.08 is: 5,459,320.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,726,435.66 : 17,591,978.40 = 3,639,066.08 : x
  2. Step 2: Convert to fraction form
    11,726,435.66/17,591,978.40 = 3,639,066.08/x
  3. Step 3: Cross multiply
    11,726,435.66x = 17,591,978.40 × 3,639,066.08
  4. Step 4: Simplify right side
    11,726,435.66x = 64,018,371,875,532.66
  5. Step 5: Solve for x
    x = 64,018,371,875,532.66/11,726,435.66
  6. Step 6: Final answer
    x = 5,459,320.61

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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.