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Finding the Fourth Proportional to 191,328.78, 286,816.06 and 84,656.20

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Solution

The fourth proportional to 191,328.78, 286,816.06 and 84,656.20 is: 126,905.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,328.78 : 286,816.06 = 84,656.20 : x
  2. Step 2: Convert to fraction form
    191,328.78/286,816.06 = 84,656.20/x
  3. Step 3: Cross multiply
    191,328.78x = 286,816.06 × 84,656.20
  4. Step 4: Simplify right side
    191,328.78x = 24,280,757,738.57
  5. Step 5: Solve for x
    x = 24,280,757,738.57/191,328.78
  6. Step 6: Final answer
    x = 126,905.94

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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.