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Finding the Fourth Proportional to 191,997.90, 265,056.71 and 140,256.90

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Solution

The fourth proportional to 191,997.90, 265,056.71 and 140,256.90 is: 193,627.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,997.90 : 265,056.71 = 140,256.90 : x
  2. Step 2: Convert to fraction form
    191,997.90/265,056.71 = 140,256.90/x
  3. Step 3: Cross multiply
    191,997.90x = 265,056.71 × 140,256.90
  4. Step 4: Simplify right side
    191,997.90x = 37,176,032,804.95
  5. Step 5: Solve for x
    x = 37,176,032,804.95/191,997.90
  6. Step 6: Final answer
    x = 193,627.29

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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.