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Finding the Fourth Proportional to 1,948,297.78, 2,688,654.83 and 1,088,858.01

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Solution

The fourth proportional to 1,948,297.78, 2,688,654.83 and 1,088,858.01 is: 1,502,626.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948,297.78 : 2,688,654.83 = 1,088,858.01 : x
  2. Step 2: Convert to fraction form
    1,948,297.78/2,688,654.83 = 1,088,858.01/x
  3. Step 3: Cross multiply
    1,948,297.78x = 2,688,654.83 × 1,088,858.01
  4. Step 4: Simplify right side
    1,948,297.78x = 2,927,563,347,770.69
  5. Step 5: Solve for x
    x = 2,927,563,347,770.69/1,948,297.78
  6. Step 6: Final answer
    x = 1,502,626.23

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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.