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Finding the Fourth Proportional to 191,652.10, 287,533.66 and 79,311.58

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Solution

The fourth proportional to 191,652.10, 287,533.66 and 79,311.58 is: 118,990.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,652.10 : 287,533.66 = 79,311.58 : x
  2. Step 2: Convert to fraction form
    191,652.10/287,533.66 = 79,311.58/x
  3. Step 3: Cross multiply
    191,652.10x = 287,533.66 × 79,311.58
  4. Step 4: Simplify right side
    191,652.10x = 22,804,748,877.78
  5. Step 5: Solve for x
    x = 22,804,748,877.78/191,652.10
  6. Step 6: Final answer
    x = 118,990.34

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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.