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Finding the Fourth Proportional to 1,944,607.80, 2,916,036.90 and 879,101.40

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Solution

The fourth proportional to 1,944,607.80, 2,916,036.90 and 879,101.40 is: 1,318,256.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944,607.80 : 2,916,036.90 = 879,101.40 : x
  2. Step 2: Convert to fraction form
    1,944,607.80/2,916,036.90 = 879,101.40/x
  3. Step 3: Cross multiply
    1,944,607.80x = 2,916,036.90 × 879,101.40
  4. Step 4: Simplify right side
    1,944,607.80x = 2,563,492,121,241.66
  5. Step 5: Solve for x
    x = 2,563,492,121,241.66/1,944,607.80
  6. Step 6: Final answer
    x = 1,318,256.63

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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.