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Finding the Fourth Proportional to 661,679.10, 993,502.80 and 512,088.30

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Solution

The fourth proportional to 661,679.10, 993,502.80 and 512,088.30 is: 768,894.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,679.10 : 993,502.80 = 512,088.30 : x
  2. Step 2: Convert to fraction form
    661,679.10/993,502.80 = 512,088.30/x
  3. Step 3: Cross multiply
    661,679.10x = 993,502.80 × 512,088.30
  4. Step 4: Simplify right side
    661,679.10x = 508,761,159,897.24
  5. Step 5: Solve for x
    x = 508,761,159,897.24/661,679.10
  6. Step 6: Final answer
    x = 768,894.11

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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.