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Finding the Fourth Proportional to 315,936.40, 473,904.54 and 126,482.04

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Solution

The fourth proportional to 315,936.40, 473,904.54 and 126,482.04 is: 189,723.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,936.40 : 473,904.54 = 126,482.04 : x
  2. Step 2: Convert to fraction form
    315,936.40/473,904.54 = 126,482.04/x
  3. Step 3: Cross multiply
    315,936.40x = 473,904.54 × 126,482.04
  4. Step 4: Simplify right side
    315,936.40x = 59,940,412,984.46
  5. Step 5: Solve for x
    x = 59,940,412,984.46/315,936.40
  6. Step 6: Final answer
    x = 189,723.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.