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Finding the Fourth Proportional to 315,568.81, 473,357.40 and 105,206.82

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Solution

The fourth proportional to 315,568.81, 473,357.40 and 105,206.82 is: 157,811.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,568.81 : 473,357.40 = 105,206.82 : x
  2. Step 2: Convert to fraction form
    315,568.81/473,357.40 = 105,206.82/x
  3. Step 3: Cross multiply
    315,568.81x = 473,357.40 × 105,206.82
  4. Step 4: Simplify right side
    315,568.81x = 49,800,426,777.47
  5. Step 5: Solve for x
    x = 49,800,426,777.47/315,568.81
  6. Step 6: Final answer
    x = 157,811.63

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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.