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Finding the Fourth Proportional to 621,667.75, 932,501.62 and 411,256.48

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Solution

The fourth proportional to 621,667.75, 932,501.62 and 411,256.48 is: 616,884.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,667.75 : 932,501.62 = 411,256.48 : x
  2. Step 2: Convert to fraction form
    621,667.75/932,501.62 = 411,256.48/x
  3. Step 3: Cross multiply
    621,667.75x = 932,501.62 × 411,256.48
  4. Step 4: Simplify right side
    621,667.75x = 383,497,333,835.50
  5. Step 5: Solve for x
    x = 383,497,333,835.50/621,667.75
  6. Step 6: Final answer
    x = 616,884.72

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Similar ratio
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1.5x scale

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.