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Finding the Fourth Proportional to 1,328,000, 1,992,017.28 and 441,536

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Solution

The fourth proportional to 1,328,000, 1,992,017.28 and 441,536 is: 662,309.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,000 : 1,992,017.28 = 441,536 : x
  2. Step 2: Convert to fraction form
    1,328,000/1,992,017.28 = 441,536/x
  3. Step 3: Cross multiply
    1,328,000x = 1,992,017.28 × 441,536
  4. Step 4: Simplify right side
    1,328,000x = 879,547,341,742.08
  5. Step 5: Solve for x
    x = 879,547,341,742.08/1,328,000
  6. Step 6: Final answer
    x = 662,309.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.