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Finding the Fourth Proportional to 508,958.61, 763,477.97 and 134,981.61

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Solution

The fourth proportional to 508,958.61, 763,477.97 and 134,981.61 is: 202,483.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,958.61 : 763,477.97 = 134,981.61 : x
  2. Step 2: Convert to fraction form
    508,958.61/763,477.97 = 134,981.61/x
  3. Step 3: Cross multiply
    508,958.61x = 763,477.97 × 134,981.61
  4. Step 4: Simplify right side
    508,958.61x = 103,055,484,915.22
  5. Step 5: Solve for x
    x = 103,055,484,915.22/508,958.61
  6. Step 6: Final answer
    x = 202,483.04

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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.