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Finding the Fourth Proportional to 1,894,718.34, 2,616,457.50 and 1,216,835.82

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Solution

The fourth proportional to 1,894,718.34, 2,616,457.50 and 1,216,835.82 is: 1,680,354.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,894,718.34 : 2,616,457.50 = 1,216,835.82 : x
  2. Step 2: Convert to fraction form
    1,894,718.34/2,616,457.50 = 1,216,835.82/x
  3. Step 3: Cross multiply
    1,894,718.34x = 2,616,457.50 × 1,216,835.82
  4. Step 4: Simplify right side
    1,894,718.34x = 3,183,799,207,507.65
  5. Step 5: Solve for x
    x = 3,183,799,207,507.65/1,894,718.34
  6. Step 6: Final answer
    x = 1,680,354.88

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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.