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Finding the Fourth Proportional to 1,988,618.04, 2,981,775.06 and 1,358,293.56

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Solution

The fourth proportional to 1,988,618.04, 2,981,775.06 and 1,358,293.56 is: 2,036,653.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,618.04 : 2,981,775.06 = 1,358,293.56 : x
  2. Step 2: Convert to fraction form
    1,988,618.04/2,981,775.06 = 1,358,293.56/x
  3. Step 3: Cross multiply
    1,988,618.04x = 2,981,775.06 × 1,358,293.56
  4. Step 4: Simplify right side
    1,988,618.04x = 4,050,125,861,366.61
  5. Step 5: Solve for x
    x = 4,050,125,861,366.61/1,988,618.04
  6. Step 6: Final answer
    x = 2,036,653.48

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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.