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Finding the Fourth Proportional to 319,321.32, 440,653.32 and 176,087.40

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Solution

The fourth proportional to 319,321.32, 440,653.32 and 176,087.40 is: 242,995.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,321.32 : 440,653.32 = 176,087.40 : x
  2. Step 2: Convert to fraction form
    319,321.32/440,653.32 = 176,087.40/x
  3. Step 3: Cross multiply
    319,321.32x = 440,653.32 × 176,087.40
  4. Step 4: Simplify right side
    319,321.32x = 77,593,497,420.17
  5. Step 5: Solve for x
    x = 77,593,497,420.17/319,321.32
  6. Step 6: Final answer
    x = 242,995.04

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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.