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Finding the Fourth Proportional to 101,178.76, 139,605.01 and 58,714.51

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Solution

The fourth proportional to 101,178.76, 139,605.01 and 58,714.51 is: 81,013.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,178.76 : 139,605.01 = 58,714.51 : x
  2. Step 2: Convert to fraction form
    101,178.76/139,605.01 = 58,714.51/x
  3. Step 3: Cross multiply
    101,178.76x = 139,605.01 × 58,714.51
  4. Step 4: Simplify right side
    101,178.76x = 8,196,839,755.70
  5. Step 5: Solve for x
    x = 8,196,839,755.70/101,178.76
  6. Step 6: Final answer
    x = 81,013.44

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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.