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Finding the Fourth Proportional to 393,761.48, 590,379.76 and 191,303.60

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Solution

The fourth proportional to 393,761.48, 590,379.76 and 191,303.60 is: 286,827.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,761.48 : 590,379.76 = 191,303.60 : x
  2. Step 2: Convert to fraction form
    393,761.48/590,379.76 = 191,303.60/x
  3. Step 3: Cross multiply
    393,761.48x = 590,379.76 × 191,303.60
  4. Step 4: Simplify right side
    393,761.48x = 112,941,773,455.14
  5. Step 5: Solve for x
    x = 112,941,773,455.14/393,761.48
  6. Step 6: Final answer
    x = 286,827.89

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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.