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Finding the Fourth Proportional to 354,123, 531,288.54 and 104,811.48

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Solution

The fourth proportional to 354,123, 531,288.54 and 104,811.48 is: 157,248.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,123 : 531,288.54 = 104,811.48 : x
  2. Step 2: Convert to fraction form
    354,123/531,288.54 = 104,811.48/x
  3. Step 3: Cross multiply
    354,123x = 531,288.54 × 104,811.48
  4. Step 4: Simplify right side
    354,123x = 55,685,138,184.44
  5. Step 5: Solve for x
    x = 55,685,138,184.44/354,123
  6. Step 6: Final answer
    x = 157,248.01

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1.5x scale

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.