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Finding the Fourth Proportional to 986,395.44, 1,361,126.52 and 556,650

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Solution

The fourth proportional to 986,395.44, 1,361,126.52 and 556,650 is: 768,121.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,395.44 : 1,361,126.52 = 556,650 : x
  2. Step 2: Convert to fraction form
    986,395.44/1,361,126.52 = 556,650/x
  3. Step 3: Cross multiply
    986,395.44x = 1,361,126.52 × 556,650
  4. Step 4: Simplify right side
    986,395.44x = 757,671,077,358
  5. Step 5: Solve for x
    x = 757,671,077,358/986,395.44
  6. Step 6: Final answer
    x = 768,121.03

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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.