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Finding the Fourth Proportional to 1,921,798.15, 2,651,955.29 and 1,105,870.22

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Solution

The fourth proportional to 1,921,798.15, 2,651,955.29 and 1,105,870.22 is: 1,526,028.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921,798.15 : 2,651,955.29 = 1,105,870.22 : x
  2. Step 2: Convert to fraction form
    1,921,798.15/2,651,955.29 = 1,105,870.22/x
  3. Step 3: Cross multiply
    1,921,798.15x = 2,651,955.29 × 1,105,870.22
  4. Step 4: Simplify right side
    1,921,798.15x = 2,932,718,375,285.18
  5. Step 5: Solve for x
    x = 2,932,718,375,285.18/1,921,798.15
  6. Step 6: Final answer
    x = 1,526,028.30

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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.