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Finding the Fourth Proportional to 1,608,849.52, 2,218,649.80 and 1,086,708.40

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Solution

The fourth proportional to 1,608,849.52, 2,218,649.80 and 1,086,708.40 is: 1,498,602.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,608,849.52 : 2,218,649.80 = 1,086,708.40 : x
  2. Step 2: Convert to fraction form
    1,608,849.52/2,218,649.80 = 1,086,708.40/x
  3. Step 3: Cross multiply
    1,608,849.52x = 2,218,649.80 × 1,086,708.40
  4. Step 4: Simplify right side
    1,608,849.52x = 2,411,025,374,318.32
  5. Step 5: Solve for x
    x = 2,411,025,374,318.32/1,608,849.52
  6. Step 6: Final answer
    x = 1,498,602.17

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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.