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Finding the Fourth Proportional to 621,812.90, 932,258.55 and 266,536.10

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Solution

The fourth proportional to 621,812.90, 932,258.55 and 266,536.10 is: 399,606.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,812.90 : 932,258.55 = 266,536.10 : x
  2. Step 2: Convert to fraction form
    621,812.90/932,258.55 = 266,536.10/x
  3. Step 3: Cross multiply
    621,812.90x = 932,258.55 × 266,536.10
  4. Step 4: Simplify right side
    621,812.90x = 248,480,558,108.66
  5. Step 5: Solve for x
    x = 248,480,558,108.66/621,812.90
  6. Step 6: Final answer
    x = 399,606.63

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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.