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Finding the Fourth Proportional to 1,627,782, 2,246,339.16 and 912,390

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Solution

The fourth proportional to 1,627,782, 2,246,339.16 and 912,390 is: 1,259,098.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627,782 : 2,246,339.16 = 912,390 : x
  2. Step 2: Convert to fraction form
    1,627,782/2,246,339.16 = 912,390/x
  3. Step 3: Cross multiply
    1,627,782x = 2,246,339.16 × 912,390
  4. Step 4: Simplify right side
    1,627,782x = 2,049,537,386,192.40
  5. Step 5: Solve for x
    x = 2,049,537,386,192.40/1,627,782
  6. Step 6: Final answer
    x = 1,259,098.20

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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.