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Finding the Fourth Proportional to 319,553.64, 440,985.60 and 176,313.78

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Solution

The fourth proportional to 319,553.64, 440,985.60 and 176,313.78 is: 243,313.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,553.64 : 440,985.60 = 176,313.78 : x
  2. Step 2: Convert to fraction form
    319,553.64/440,985.60 = 176,313.78/x
  3. Step 3: Cross multiply
    319,553.64x = 440,985.60 × 176,313.78
  4. Step 4: Simplify right side
    319,553.64x = 77,751,838,061.57
  5. Step 5: Solve for x
    x = 77,751,838,061.57/319,553.64
  6. Step 6: Final answer
    x = 243,313.89

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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.