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Finding the Fourth Proportional to 35,781.80, 53,715.90 and 35,522.60

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Solution

The fourth proportional to 35,781.80, 53,715.90 and 35,522.60 is: 53,326.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,781.80 : 53,715.90 = 35,522.60 : x
  2. Step 2: Convert to fraction form
    35,781.80/53,715.90 = 35,522.60/x
  3. Step 3: Cross multiply
    35,781.80x = 53,715.90 × 35,522.60
  4. Step 4: Simplify right side
    35,781.80x = 1,908,128,429.34
  5. Step 5: Solve for x
    x = 1,908,128,429.34/35,781.80
  6. Step 6: Final answer
    x = 53,326.79

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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.