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Finding the Fourth Proportional to 191,611.71, 264,430.77 and 111,039.39

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Solution

The fourth proportional to 191,611.71, 264,430.77 and 111,039.39 is: 153,238.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,611.71 : 264,430.77 = 111,039.39 : x
  2. Step 2: Convert to fraction form
    191,611.71/264,430.77 = 111,039.39/x
  3. Step 3: Cross multiply
    191,611.71x = 264,430.77 × 111,039.39
  4. Step 4: Simplify right side
    191,611.71x = 29,362,231,398.03
  5. Step 5: Solve for x
    x = 29,362,231,398.03/191,611.71
  6. Step 6: Final answer
    x = 153,238.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.