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Finding the Fourth Proportional to 354,903.50, 532,358.90 and 105,585.50

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Solution

The fourth proportional to 354,903.50, 532,358.90 and 105,585.50 is: 158,379.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,903.50 : 532,358.90 = 105,585.50 : x
  2. Step 2: Convert to fraction form
    354,903.50/532,358.90 = 105,585.50/x
  3. Step 3: Cross multiply
    354,903.50x = 532,358.90 × 105,585.50
  4. Step 4: Simplify right side
    354,903.50x = 56,209,380,635.95
  5. Step 5: Solve for x
    x = 56,209,380,635.95/354,903.50
  6. Step 6: Final answer
    x = 158,379.34

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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.