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Finding the Fourth Proportional to 903,388.77, 1,355,363.82 and 543,955.32

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Solution

The fourth proportional to 903,388.77, 1,355,363.82 and 543,955.32 is: 816,101.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,388.77 : 1,355,363.82 = 543,955.32 : x
  2. Step 2: Convert to fraction form
    903,388.77/1,355,363.82 = 543,955.32/x
  3. Step 3: Cross multiply
    903,388.77x = 1,355,363.82 × 543,955.32
  4. Step 4: Simplify right side
    903,388.77x = 737,257,360,424.52
  5. Step 5: Solve for x
    x = 737,257,360,424.52/903,388.77
  6. Step 6: Final answer
    x = 816,101.98

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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.