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Finding the Fourth Proportional to 1,894,646.84, 2,616,358.74 and 1,216,764.32

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Solution

The fourth proportional to 1,894,646.84, 2,616,358.74 and 1,216,764.32 is: 1,680,256.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,894,646.84 : 2,616,358.74 = 1,216,764.32 : x
  2. Step 2: Convert to fraction form
    1,894,646.84/2,616,358.74 = 1,216,764.32/x
  3. Step 3: Cross multiply
    1,894,646.84x = 2,616,358.74 × 1,216,764.32
  4. Step 4: Simplify right side
    1,894,646.84x = 3,183,491,963,152.16
  5. Step 5: Solve for x
    x = 3,183,491,963,152.16/1,894,646.84
  6. Step 6: Final answer
    x = 1,680,256.13

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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.