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Finding the Fourth Proportional to 621,666.75, 932,500.12 and 411,255.48

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Solution

The fourth proportional to 621,666.75, 932,500.12 and 411,255.48 is: 616,883.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,666.75 : 932,500.12 = 411,255.48 : x
  2. Step 2: Convert to fraction form
    621,666.75/932,500.12 = 411,255.48/x
  3. Step 3: Cross multiply
    621,666.75x = 932,500.12 × 411,255.48
  4. Step 4: Simplify right side
    621,666.75x = 383,495,783,147.55
  5. Step 5: Solve for x
    x = 383,495,783,147.55/621,666.75
  6. Step 6: Final answer
    x = 616,883.22

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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.