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Finding the Fourth Proportional to 52,393.60, 78,604.16 and 19,116.80

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Solution

The fourth proportional to 52,393.60, 78,604.16 and 19,116.80 is: 28,680.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,393.60 : 78,604.16 = 19,116.80 : x
  2. Step 2: Convert to fraction form
    52,393.60/78,604.16 = 19,116.80/x
  3. Step 3: Cross multiply
    52,393.60x = 78,604.16 × 19,116.80
  4. Step 4: Simplify right side
    52,393.60x = 1,502,660,005.89
  5. Step 5: Solve for x
    x = 1,502,660,005.89/52,393.60
  6. Step 6: Final answer
    x = 28,680.22

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1.5x scale

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.