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Finding the Fourth Proportional to 407,689.58, 611,395.96 and 154,909.34

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Solution

The fourth proportional to 407,689.58, 611,395.96 and 154,909.34 is: 232,311.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,689.58 : 611,395.96 = 154,909.34 : x
  2. Step 2: Convert to fraction form
    407,689.58/611,395.96 = 154,909.34/x
  3. Step 3: Cross multiply
    407,689.58x = 611,395.96 × 154,909.34
  4. Step 4: Simplify right side
    407,689.58x = 94,710,944,642.27
  5. Step 5: Solve for x
    x = 94,710,944,642.27/407,689.58
  6. Step 6: Final answer
    x = 232,311.42

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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.