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Finding the Fourth Proportional to 436,361.50, 602,186.16 and 285,458.50

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Solution

The fourth proportional to 436,361.50, 602,186.16 and 285,458.50 is: 393,937.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,361.50 : 602,186.16 = 285,458.50 : x
  2. Step 2: Convert to fraction form
    436,361.50/602,186.16 = 285,458.50/x
  3. Step 3: Cross multiply
    436,361.50x = 602,186.16 × 285,458.50
  4. Step 4: Simplify right side
    436,361.50x = 171,899,157,954.36
  5. Step 5: Solve for x
    x = 171,899,157,954.36/436,361.50
  6. Step 6: Final answer
    x = 393,937.50

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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.