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Finding the Fourth Proportional to 1,226,337.45, 1,718,643.90 and 1,226,337.45

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Solution

The fourth proportional to 1,226,337.45, 1,718,643.90 and 1,226,337.45 is: 1,718,643.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226,337.45 : 1,718,643.90 = 1,226,337.45 : x
  2. Step 2: Convert to fraction form
    1,226,337.45/1,718,643.90 = 1,226,337.45/x
  3. Step 3: Cross multiply
    1,226,337.45x = 1,718,643.90 × 1,226,337.45
  4. Step 4: Simplify right side
    1,226,337.45x = 2,107,637,377,784.05
  5. Step 5: Solve for x
    x = 2,107,637,377,784.05/1,226,337.45
  6. Step 6: Final answer
    x = 1,718,643.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.