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Finding the Fourth Proportional to 417,356.28, 626,071.95 and 117,839.88

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Solution

The fourth proportional to 417,356.28, 626,071.95 and 117,839.88 is: 176,770.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,356.28 : 626,071.95 = 117,839.88 : x
  2. Step 2: Convert to fraction form
    417,356.28/626,071.95 = 117,839.88/x
  3. Step 3: Cross multiply
    417,356.28x = 626,071.95 × 117,839.88
  4. Step 4: Simplify right side
    417,356.28x = 73,776,243,459.37
  5. Step 5: Solve for x
    x = 73,776,243,459.37/417,356.28
  6. Step 6: Final answer
    x = 176,770.42

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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.