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Finding the Fourth Proportional to 661,693.10, 993,523.80 and 512,102.30

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Solution

The fourth proportional to 661,693.10, 993,523.80 and 512,102.30 is: 768,915.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,693.10 : 993,523.80 = 512,102.30 : x
  2. Step 2: Convert to fraction form
    661,693.10/993,523.80 = 512,102.30/x
  3. Step 3: Cross multiply
    661,693.10x = 993,523.80 × 512,102.30
  4. Step 4: Simplify right side
    661,693.10x = 508,785,823,084.74
  5. Step 5: Solve for x
    x = 508,785,823,084.74/661,693.10
  6. Step 6: Final answer
    x = 768,915.11

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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.