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Finding the Fourth Proportional to 371,624.50, 557,519.81 and 118,920.16

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Solution

The fourth proportional to 371,624.50, 557,519.81 and 118,920.16 is: 178,406.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,624.50 : 557,519.81 = 118,920.16 : x
  2. Step 2: Convert to fraction form
    371,624.50/557,519.81 = 118,920.16/x
  3. Step 3: Cross multiply
    371,624.50x = 557,519.81 × 118,920.16
  4. Step 4: Simplify right side
    371,624.50x = 66,300,343,465.92
  5. Step 5: Solve for x
    x = 66,300,343,465.92/371,624.50
  6. Step 6: Final answer
    x = 178,406.82

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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.