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Finding the Fourth Proportional to 319,671.36, 441,144.30 and 176,431.40

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Solution

The fourth proportional to 319,671.36, 441,144.30 and 176,431.40 is: 243,474.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,671.36 : 441,144.30 = 176,431.40 : x
  2. Step 2: Convert to fraction form
    319,671.36/441,144.30 = 176,431.40/x
  3. Step 3: Cross multiply
    319,671.36x = 441,144.30 × 176,431.40
  4. Step 4: Simplify right side
    319,671.36x = 77,831,706,451.02
  5. Step 5: Solve for x
    x = 77,831,706,451.02/319,671.36
  6. Step 6: Final answer
    x = 243,474.13

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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.