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Finding the Fourth Proportional to 661,701.10, 993,535.80 and 512,110.30

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Solution

The fourth proportional to 661,701.10, 993,535.80 and 512,110.30 is: 768,927.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,701.10 : 993,535.80 = 512,110.30 : x
  2. Step 2: Convert to fraction form
    661,701.10/993,535.80 = 512,110.30/x
  3. Step 3: Cross multiply
    661,701.10x = 993,535.80 × 512,110.30
  4. Step 4: Simplify right side
    661,701.10x = 508,799,916,598.74
  5. Step 5: Solve for x
    x = 508,799,916,598.74/661,701.10
  6. Step 6: Final answer
    x = 768,927.11

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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.