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Finding the Fourth Proportional to 319,317.60, 440,661.36 and 176,082.72

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Solution

The fourth proportional to 319,317.60, 440,661.36 and 176,082.72 is: 242,995.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,317.60 : 440,661.36 = 176,082.72 : x
  2. Step 2: Convert to fraction form
    319,317.60/440,661.36 = 176,082.72/x
  3. Step 3: Cross multiply
    319,317.60x = 440,661.36 × 176,082.72
  4. Step 4: Simplify right side
    319,317.60x = 77,592,850,867.70
  5. Step 5: Solve for x
    x = 77,592,850,867.70/319,317.60
  6. Step 6: Final answer
    x = 242,995.85

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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.