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Finding the Fourth Proportional to 260,431.69, 390,686.53 and 94,258.57

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Solution

The fourth proportional to 260,431.69, 390,686.53 and 94,258.57 is: 141,401.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,431.69 : 390,686.53 = 94,258.57 : x
  2. Step 2: Convert to fraction form
    260,431.69/390,686.53 = 94,258.57/x
  3. Step 3: Cross multiply
    260,431.69x = 390,686.53 × 94,258.57
  4. Step 4: Simplify right side
    260,431.69x = 36,825,553,636.06
  5. Step 5: Solve for x
    x = 36,825,553,636.06/260,431.69
  6. Step 6: Final answer
    x = 141,401.97

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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.