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Finding the Fourth Proportional to 191,449.17, 286,914.96 and 138,232.17

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Solution

The fourth proportional to 191,449.17, 286,914.96 and 138,232.17 is: 207,161.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,449.17 : 286,914.96 = 138,232.17 : x
  2. Step 2: Convert to fraction form
    191,449.17/286,914.96 = 138,232.17/x
  3. Step 3: Cross multiply
    191,449.17x = 286,914.96 × 138,232.17
  4. Step 4: Simplify right side
    191,449.17x = 39,660,877,526.26
  5. Step 5: Solve for x
    x = 39,660,877,526.26/191,449.17
  6. Step 6: Final answer
    x = 207,161.40

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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.