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Finding the Fourth Proportional to 338,707.62, 508,095.45 and 89,389.62

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Solution

The fourth proportional to 338,707.62, 508,095.45 and 89,389.62 is: 134,093.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,707.62 : 508,095.45 = 89,389.62 : x
  2. Step 2: Convert to fraction form
    338,707.62/508,095.45 = 89,389.62/x
  3. Step 3: Cross multiply
    338,707.62x = 508,095.45 × 89,389.62
  4. Step 4: Simplify right side
    338,707.62x = 45,418,459,199.23
  5. Step 5: Solve for x
    x = 45,418,459,199.23/338,707.62
  6. Step 6: Final answer
    x = 134,093.41

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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.