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Finding the Fourth Proportional to 393,756.42, 590,643 and 141,053.34

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Solution

The fourth proportional to 393,756.42, 590,643 and 141,053.34 is: 211,583.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,756.42 : 590,643 = 141,053.34 : x
  2. Step 2: Convert to fraction form
    393,756.42/590,643 = 141,053.34/x
  3. Step 3: Cross multiply
    393,756.42x = 590,643 × 141,053.34
  4. Step 4: Simplify right side
    393,756.42x = 83,312,167,897.62
  5. Step 5: Solve for x
    x = 83,312,167,897.62/393,756.42
  6. Step 6: Final answer
    x = 211,583.01

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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.