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Finding the Fourth Proportional to 319,311.40, 440,650.65 and 176,068.30

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Solution

The fourth proportional to 319,311.40, 440,650.65 and 176,068.30 is: 242,974.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,311.40 : 440,650.65 = 176,068.30 : x
  2. Step 2: Convert to fraction form
    319,311.40/440,650.65 = 176,068.30/x
  3. Step 3: Cross multiply
    319,311.40x = 440,650.65 × 176,068.30
  4. Step 4: Simplify right side
    319,311.40x = 77,584,610,839.40
  5. Step 5: Solve for x
    x = 77,584,610,839.40/319,311.40
  6. Step 6: Final answer
    x = 242,974.76

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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.