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Finding the Fourth Proportional to 1,887,599.86, 2,604,927.78 and 1,028,158.06

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Solution

The fourth proportional to 1,887,599.86, 2,604,927.78 and 1,028,158.06 is: 1,418,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887,599.86 : 2,604,927.78 = 1,028,158.06 : x
  2. Step 2: Convert to fraction form
    1,887,599.86/2,604,927.78 = 1,028,158.06/x
  3. Step 3: Cross multiply
    1,887,599.86x = 2,604,927.78 × 1,028,158.06
  4. Step 4: Simplify right side
    1,887,599.86x = 2,678,277,492,724.91
  5. Step 5: Solve for x
    x = 2,678,277,492,724.91/1,887,599.86
  6. Step 6: Final answer
    x = 1,418,879.90

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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.