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Finding the Fourth Proportional to 469,928.81, 648,502.42 and 255,068.92

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Solution

The fourth proportional to 469,928.81, 648,502.42 and 255,068.92 is: 351,995.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,928.81 : 648,502.42 = 255,068.92 : x
  2. Step 2: Convert to fraction form
    469,928.81/648,502.42 = 255,068.92/x
  3. Step 3: Cross multiply
    469,928.81x = 648,502.42 × 255,068.92
  4. Step 4: Simplify right side
    469,928.81x = 165,412,811,886.79
  5. Step 5: Solve for x
    x = 165,412,811,886.79/469,928.81
  6. Step 6: Final answer
    x = 351,995.47

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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.