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Finding the Fourth Proportional to 191,273.38, 286,804.74 and 78,928.06

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Solution

The fourth proportional to 191,273.38, 286,804.74 and 78,928.06 is: 118,348.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,273.38 : 286,804.74 = 78,928.06 : x
  2. Step 2: Convert to fraction form
    191,273.38/286,804.74 = 78,928.06/x
  3. Step 3: Cross multiply
    191,273.38x = 286,804.74 × 78,928.06
  4. Step 4: Simplify right side
    191,273.38x = 22,636,941,727.00
  5. Step 5: Solve for x
    x = 22,636,941,727.00/191,273.38
  6. Step 6: Final answer
    x = 118,348.63

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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.