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Finding the Fourth Proportional to 289,525.16, 434,181 and 99,937.28

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Solution

The fourth proportional to 289,525.16, 434,181 and 99,937.28 is: 149,869.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,525.16 : 434,181 = 99,937.28 : x
  2. Step 2: Convert to fraction form
    289,525.16/434,181 = 99,937.28/x
  3. Step 3: Cross multiply
    289,525.16x = 434,181 × 99,937.28
  4. Step 4: Simplify right side
    289,525.16x = 43,390,868,167.68
  5. Step 5: Solve for x
    x = 43,390,868,167.68/289,525.16
  6. Step 6: Final answer
    x = 149,869.08

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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.