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Finding the Fourth Proportional to 386,641.75, 533,564.53 and 214,585.69

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Solution

The fourth proportional to 386,641.75, 533,564.53 and 214,585.69 is: 296,127.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,641.75 : 533,564.53 = 214,585.69 : x
  2. Step 2: Convert to fraction form
    386,641.75/533,564.53 = 214,585.69/x
  3. Step 3: Cross multiply
    386,641.75x = 533,564.53 × 214,585.69
  4. Step 4: Simplify right side
    386,641.75x = 114,495,311,756.65
  5. Step 5: Solve for x
    x = 114,495,311,756.65/386,641.75
  6. Step 6: Final answer
    x = 296,127.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.