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Finding the Fourth Proportional to 457,376.90, 685,941.41 and 191,081.70

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Solution

The fourth proportional to 457,376.90, 685,941.41 and 191,081.70 is: 286,570.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,376.90 : 685,941.41 = 191,081.70 : x
  2. Step 2: Convert to fraction form
    457,376.90/685,941.41 = 191,081.70/x
  3. Step 3: Cross multiply
    457,376.90x = 685,941.41 × 191,081.70
  4. Step 4: Simplify right side
    457,376.90x = 131,070,851,200.90
  5. Step 5: Solve for x
    x = 131,070,851,200.90/457,376.90
  6. Step 6: Final answer
    x = 286,570.77

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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.