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Finding the Fourth Proportional to 319,639.62, 441,100.64 and 176,399.66

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Solution

The fourth proportional to 319,639.62, 441,100.64 and 176,399.66 is: 243,430.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,639.62 : 441,100.64 = 176,399.66 : x
  2. Step 2: Convert to fraction form
    319,639.62/441,100.64 = 176,399.66/x
  3. Step 3: Cross multiply
    319,639.62x = 441,100.64 × 176,399.66
  4. Step 4: Simplify right side
    319,639.62x = 77,810,003,969.26
  5. Step 5: Solve for x
    x = 77,810,003,969.26/319,639.62
  6. Step 6: Final answer
    x = 243,430.41

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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.