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Finding the Fourth Proportional to 156,043.40, 233,481.90 and 103,555.40

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Solution

The fourth proportional to 156,043.40, 233,481.90 and 103,555.40 is: 154,946.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,043.40 : 233,481.90 = 103,555.40 : x
  2. Step 2: Convert to fraction form
    156,043.40/233,481.90 = 103,555.40/x
  3. Step 3: Cross multiply
    156,043.40x = 233,481.90 × 103,555.40
  4. Step 4: Simplify right side
    156,043.40x = 24,178,311,547.26
  5. Step 5: Solve for x
    x = 24,178,311,547.26/156,043.40
  6. Step 6: Final answer
    x = 154,946.07

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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.