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Finding the Fourth Proportional to 207,378.30, 286,178.87 and 116,733.98

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Solution

The fourth proportional to 207,378.30, 286,178.87 and 116,733.98 is: 161,091.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,378.30 : 286,178.87 = 116,733.98 : x
  2. Step 2: Convert to fraction form
    207,378.30/286,178.87 = 116,733.98/x
  3. Step 3: Cross multiply
    207,378.30x = 286,178.87 × 116,733.98
  4. Step 4: Simplify right side
    207,378.30x = 33,406,798,487.00
  5. Step 5: Solve for x
    x = 33,406,798,487.00/207,378.30
  6. Step 6: Final answer
    x = 161,091.10

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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.