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Finding the Fourth Proportional to 1,618,347.12, 2,227,326.84 and 1,187,945.52

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Solution

The fourth proportional to 1,618,347.12, 2,227,326.84 and 1,187,945.52 is: 1,634,966.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618,347.12 : 2,227,326.84 = 1,187,945.52 : x
  2. Step 2: Convert to fraction form
    1,618,347.12/2,227,326.84 = 1,187,945.52/x
  3. Step 3: Cross multiply
    1,618,347.12x = 2,227,326.84 × 1,187,945.52
  4. Step 4: Simplify right side
    1,618,347.12x = 2,645,942,941,153.76
  5. Step 5: Solve for x
    x = 2,645,942,941,153.76/1,618,347.12
  6. Step 6: Final answer
    x = 1,634,966.26

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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.