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Finding the Fourth Proportional to 354,387.10, 531,530.87 and 101,689.12

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Solution

The fourth proportional to 354,387.10, 531,530.87 and 101,689.12 is: 152,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,387.10 : 531,530.87 = 101,689.12 : x
  2. Step 2: Convert to fraction form
    354,387.10/531,530.87 = 101,689.12/x
  3. Step 3: Cross multiply
    354,387.10x = 531,530.87 × 101,689.12
  4. Step 4: Simplify right side
    354,387.10x = 54,050,907,294.10
  5. Step 5: Solve for x
    x = 54,050,907,294.10/354,387.10
  6. Step 6: Final answer
    x = 152,519.40

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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.