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Finding the Fourth Proportional to 393,754.42, 590,640 and 141,051.34

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Solution

The fourth proportional to 393,754.42, 590,640 and 141,051.34 is: 211,580.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,754.42 : 590,640 = 141,051.34 : x
  2. Step 2: Convert to fraction form
    393,754.42/590,640 = 141,051.34/x
  3. Step 3: Cross multiply
    393,754.42x = 590,640 × 141,051.34
  4. Step 4: Simplify right side
    393,754.42x = 83,310,563,457.60
  5. Step 5: Solve for x
    x = 83,310,563,457.60/393,754.42
  6. Step 6: Final answer
    x = 211,580.01

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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.