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Finding the Fourth Proportional to 113,509.63, 156,648.15 and 63,208.63

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Solution

The fourth proportional to 113,509.63, 156,648.15 and 63,208.63 is: 87,230.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,509.63 : 156,648.15 = 63,208.63 : x
  2. Step 2: Convert to fraction form
    113,509.63/156,648.15 = 63,208.63/x
  3. Step 3: Cross multiply
    113,509.63x = 156,648.15 × 63,208.63
  4. Step 4: Simplify right side
    113,509.63x = 9,901,513,854.25
  5. Step 5: Solve for x
    x = 9,901,513,854.25/113,509.63
  6. Step 6: Final answer
    x = 87,230.61

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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.