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Finding the Fourth Proportional to 191,273.88, 286,805.48 and 78,928.56

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Solution

The fourth proportional to 191,273.88, 286,805.48 and 78,928.56 is: 118,349.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,273.88 : 286,805.48 = 78,928.56 : x
  2. Step 2: Convert to fraction form
    191,273.88/286,805.48 = 78,928.56/x
  3. Step 3: Cross multiply
    191,273.88x = 286,805.48 × 78,928.56
  4. Step 4: Simplify right side
    191,273.88x = 22,637,143,536.51
  5. Step 5: Solve for x
    x = 22,637,143,536.51/191,273.88
  6. Step 6: Final answer
    x = 118,349.37

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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.