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Finding the Fourth Proportional to 343,705.29, 515,434.90 and 119,005.41

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Solution

The fourth proportional to 343,705.29, 515,434.90 and 119,005.41 is: 178,465.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,705.29 : 515,434.90 = 119,005.41 : x
  2. Step 2: Convert to fraction form
    343,705.29/515,434.90 = 119,005.41/x
  3. Step 3: Cross multiply
    343,705.29x = 515,434.90 × 119,005.41
  4. Step 4: Simplify right side
    343,705.29x = 61,339,541,602.81
  5. Step 5: Solve for x
    x = 61,339,541,602.81/343,705.29
  6. Step 6: Final answer
    x = 178,465.52

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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.