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Finding the Fourth Proportional to 653,620.53, 901,856.41 and 381,564.95

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Solution

The fourth proportional to 653,620.53, 901,856.41 and 381,564.95 is: 526,477.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,620.53 : 901,856.41 = 381,564.95 : x
  2. Step 2: Convert to fraction form
    653,620.53/901,856.41 = 381,564.95/x
  3. Step 3: Cross multiply
    653,620.53x = 901,856.41 × 381,564.95
  4. Step 4: Simplify right side
    653,620.53x = 344,116,798,132.09
  5. Step 5: Solve for x
    x = 344,116,798,132.09/653,620.53
  6. Step 6: Final answer
    x = 526,477.95

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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.