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Finding the Fourth Proportional to 191,745.90, 265,087.69 and 143,916.21

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Solution

The fourth proportional to 191,745.90, 265,087.69 and 143,916.21 is: 198,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,745.90 : 265,087.69 = 143,916.21 : x
  2. Step 2: Convert to fraction form
    191,745.90/265,087.69 = 143,916.21/x
  3. Step 3: Cross multiply
    191,745.90x = 265,087.69 × 143,916.21
  4. Step 4: Simplify right side
    191,745.90x = 38,150,415,302.66
  5. Step 5: Solve for x
    x = 38,150,415,302.66/191,745.90
  6. Step 6: Final answer
    x = 198,963.40

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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.