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Finding the Fourth Proportional to 354,020.88, 530,916.48 and 117,300

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Solution

The fourth proportional to 354,020.88, 530,916.48 and 117,300 is: 175,911.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,020.88 : 530,916.48 = 117,300 : x
  2. Step 2: Convert to fraction form
    354,020.88/530,916.48 = 117,300/x
  3. Step 3: Cross multiply
    354,020.88x = 530,916.48 × 117,300
  4. Step 4: Simplify right side
    354,020.88x = 62,276,503,104
  5. Step 5: Solve for x
    x = 62,276,503,104/354,020.88
  6. Step 6: Final answer
    x = 175,911.95

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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.