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Finding the Fourth Proportional to 191,343.60, 287,015.40 and 165,099.60

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Solution

The fourth proportional to 191,343.60, 287,015.40 and 165,099.60 is: 247,649.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,343.60 : 287,015.40 = 165,099.60 : x
  2. Step 2: Convert to fraction form
    191,343.60/287,015.40 = 165,099.60/x
  3. Step 3: Cross multiply
    191,343.60x = 287,015.40 × 165,099.60
  4. Step 4: Simplify right side
    191,343.60x = 47,386,127,733.84
  5. Step 5: Solve for x
    x = 47,386,127,733.84/191,343.60
  6. Step 6: Final answer
    x = 247,649.40

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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.