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Finding the Fourth Proportional to 386,258.84, 579,554.34 and 186,729.26

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Solution

The fourth proportional to 386,258.84, 579,554.34 and 186,729.26 is: 280,174.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,258.84 : 579,554.34 = 186,729.26 : x
  2. Step 2: Convert to fraction form
    386,258.84/579,554.34 = 186,729.26/x
  3. Step 3: Cross multiply
    386,258.84x = 579,554.34 × 186,729.26
  4. Step 4: Simplify right side
    386,258.84x = 108,219,754,136.76
  5. Step 5: Solve for x
    x = 108,219,754,136.76/386,258.84
  6. Step 6: Final answer
    x = 280,174.18

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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.