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Finding the Fourth Proportional to 103,696.17, 155,544.15 and 28,816.28

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Solution

The fourth proportional to 103,696.17, 155,544.15 and 28,816.28 is: 43,224.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,696.17 : 155,544.15 = 28,816.28 : x
  2. Step 2: Convert to fraction form
    103,696.17/155,544.15 = 28,816.28/x
  3. Step 3: Cross multiply
    103,696.17x = 155,544.15 × 28,816.28
  4. Step 4: Simplify right side
    103,696.17x = 4,482,203,001.04
  5. Step 5: Solve for x
    x = 4,482,203,001.04/103,696.17
  6. Step 6: Final answer
    x = 43,224.38

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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.