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Finding the Fourth Proportional to 150,547.89, 207,741.10 and 86,906.19

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Solution

The fourth proportional to 150,547.89, 207,741.10 and 86,906.19 is: 119,921.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,547.89 : 207,741.10 = 86,906.19 : x
  2. Step 2: Convert to fraction form
    150,547.89/207,741.10 = 86,906.19/x
  3. Step 3: Cross multiply
    150,547.89x = 207,741.10 × 86,906.19
  4. Step 4: Simplify right side
    150,547.89x = 18,053,987,507.41
  5. Step 5: Solve for x
    x = 18,053,987,507.41/150,547.89
  6. Step 6: Final answer
    x = 119,921.89

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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.