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Finding the Fourth Proportional to 191,007.36, 286,412.16 and 85,735.68

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Solution

The fourth proportional to 191,007.36, 286,412.16 and 85,735.68 is: 128,559.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,007.36 : 286,412.16 = 85,735.68 : x
  2. Step 2: Convert to fraction form
    191,007.36/286,412.16 = 85,735.68/x
  3. Step 3: Cross multiply
    191,007.36x = 286,412.16 × 85,735.68
  4. Step 4: Simplify right side
    191,007.36x = 24,555,741,297.87
  5. Step 5: Solve for x
    x = 24,555,741,297.87/191,007.36
  6. Step 6: Final answer
    x = 128,559.14

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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.