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Finding the Fourth Proportional to 78,521.50, 108,342.56 and 44,522.32

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Solution

The fourth proportional to 78,521.50, 108,342.56 and 44,522.32 is: 61,431.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,521.50 : 108,342.56 = 44,522.32 : x
  2. Step 2: Convert to fraction form
    78,521.50/108,342.56 = 44,522.32/x
  3. Step 3: Cross multiply
    78,521.50x = 108,342.56 × 44,522.32
  4. Step 4: Simplify right side
    78,521.50x = 4,823,662,125.94
  5. Step 5: Solve for x
    x = 4,823,662,125.94/78,521.50
  6. Step 6: Final answer
    x = 61,431.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.