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Finding the Fourth Proportional to 185,551.95, 278,112.77 and 85,501.97

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Solution

The fourth proportional to 185,551.95, 278,112.77 and 85,501.97 is: 128,153.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,551.95 : 278,112.77 = 85,501.97 : x
  2. Step 2: Convert to fraction form
    185,551.95/278,112.77 = 85,501.97/x
  3. Step 3: Cross multiply
    185,551.95x = 278,112.77 × 85,501.97
  4. Step 4: Simplify right side
    185,551.95x = 23,779,189,717.16
  5. Step 5: Solve for x
    x = 23,779,189,717.16/185,551.95
  6. Step 6: Final answer
    x = 128,153.81

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1.5x scale

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.