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Finding the Fourth Proportional to 68,695.29, 103,044.35 and 45,152.94

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Solution

The fourth proportional to 68,695.29, 103,044.35 and 45,152.94 is: 67,730.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,695.29 : 103,044.35 = 45,152.94 : x
  2. Step 2: Convert to fraction form
    68,695.29/103,044.35 = 45,152.94/x
  3. Step 3: Cross multiply
    68,695.29x = 103,044.35 × 45,152.94
  4. Step 4: Simplify right side
    68,695.29x = 4,652,755,852.19
  5. Step 5: Solve for x
    x = 4,652,755,852.19/68,695.29
  6. Step 6: Final answer
    x = 67,730.35

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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.