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Finding the Fourth Proportional to 1,948,156.87, 2,688,448.62 and 1,088,716.90

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Solution

The fourth proportional to 1,948,156.87, 2,688,448.62 and 1,088,716.90 is: 1,502,424.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948,156.87 : 2,688,448.62 = 1,088,716.90 : x
  2. Step 2: Convert to fraction form
    1,948,156.87/2,688,448.62 = 1,088,716.90/x
  3. Step 3: Cross multiply
    1,948,156.87x = 2,688,448.62 × 1,088,716.90
  4. Step 4: Simplify right side
    1,948,156.87x = 2,926,959,447,375.68
  5. Step 5: Solve for x
    x = 2,926,959,447,375.68/1,948,156.87
  6. Step 6: Final answer
    x = 1,502,424.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.