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Finding the Fourth Proportional to 163,916.40, 245,874.60 and 53,108.40

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Solution

The fourth proportional to 163,916.40, 245,874.60 and 53,108.40 is: 79,662.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,916.40 : 245,874.60 = 53,108.40 : x
  2. Step 2: Convert to fraction form
    163,916.40/245,874.60 = 53,108.40/x
  3. Step 3: Cross multiply
    163,916.40x = 245,874.60 × 53,108.40
  4. Step 4: Simplify right side
    163,916.40x = 13,058,006,606.64
  5. Step 5: Solve for x
    x = 13,058,006,606.64/163,916.40
  6. Step 6: Final answer
    x = 79,662.60

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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.