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Finding the Fourth Proportional to 109,048.80, 163,578.60 and 56,560.80

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Solution

The fourth proportional to 109,048.80, 163,578.60 and 56,560.80 is: 84,844.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,048.80 : 163,578.60 = 56,560.80 : x
  2. Step 2: Convert to fraction form
    109,048.80/163,578.60 = 56,560.80/x
  3. Step 3: Cross multiply
    109,048.80x = 163,578.60 × 56,560.80
  4. Step 4: Simplify right side
    109,048.80x = 9,252,136,478.88
  5. Step 5: Solve for x
    x = 9,252,136,478.88/109,048.80
  6. Step 6: Final answer
    x = 84,844.00

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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.