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Finding the Fourth Proportional to 315,985.92, 474,004.08 and 105,624.96

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Solution

The fourth proportional to 315,985.92, 474,004.08 and 105,624.96 is: 158,445.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,985.92 : 474,004.08 = 105,624.96 : x
  2. Step 2: Convert to fraction form
    315,985.92/474,004.08 = 105,624.96/x
  3. Step 3: Cross multiply
    315,985.92x = 474,004.08 × 105,624.96
  4. Step 4: Simplify right side
    315,985.92x = 50,066,661,989.84
  5. Step 5: Solve for x
    x = 50,066,661,989.84/315,985.92
  6. Step 6: Final answer
    x = 158,445.86

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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.