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Finding the Fourth Proportional to 64,897.92, 89,557.12 and 36,603.20

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Solution

The fourth proportional to 64,897.92, 89,557.12 and 36,603.20 is: 50,511.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,897.92 : 89,557.12 = 36,603.20 : x
  2. Step 2: Convert to fraction form
    64,897.92/89,557.12 = 36,603.20/x
  3. Step 3: Cross multiply
    64,897.92x = 89,557.12 × 36,603.20
  4. Step 4: Simplify right side
    64,897.92x = 3,278,077,174.78
  5. Step 5: Solve for x
    x = 3,278,077,174.78/64,897.92
  6. Step 6: Final answer
    x = 50,511.28

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1.5x scale

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.