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Finding the Fourth Proportional to 661,686.10, 993,513.30 and 512,095.30

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Solution

The fourth proportional to 661,686.10, 993,513.30 and 512,095.30 is: 768,904.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,686.10 : 993,513.30 = 512,095.30 : x
  2. Step 2: Convert to fraction form
    661,686.10/993,513.30 = 512,095.30/x
  3. Step 3: Cross multiply
    661,686.10x = 993,513.30 × 512,095.30
  4. Step 4: Simplify right side
    661,686.10x = 508,773,491,417.49
  5. Step 5: Solve for x
    x = 508,773,491,417.49/661,686.10
  6. Step 6: Final answer
    x = 768,904.61

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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.