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Finding the Fourth Proportional to 191,077.61, 286,606.08 and 78,755.72

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Solution

The fourth proportional to 191,077.61, 286,606.08 and 78,755.72 is: 118,129.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,077.61 : 286,606.08 = 78,755.72 : x
  2. Step 2: Convert to fraction form
    191,077.61/286,606.08 = 78,755.72/x
  3. Step 3: Cross multiply
    191,077.61x = 286,606.08 × 78,755.72
  4. Step 4: Simplify right side
    191,077.61x = 22,571,866,753.75
  5. Step 5: Solve for x
    x = 22,571,866,753.75/191,077.61
  6. Step 6: Final answer
    x = 118,129.32

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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.