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Finding the Fourth Proportional to 191,451.69, 286,551.51 and 140,837.22

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Solution

The fourth proportional to 191,451.69, 286,551.51 and 140,837.22 is: 210,795.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,451.69 : 286,551.51 = 140,837.22 : x
  2. Step 2: Convert to fraction form
    191,451.69/286,551.51 = 140,837.22/x
  3. Step 3: Cross multiply
    191,451.69x = 286,551.51 × 140,837.22
  4. Step 4: Simplify right side
    191,451.69x = 40,357,118,055.20
  5. Step 5: Solve for x
    x = 40,357,118,055.20/191,451.69
  6. Step 6: Final answer
    x = 210,795.31

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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.