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Finding the Fourth Proportional to 157,813.33, 217,783.61 and 86,192.05

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Solution

The fourth proportional to 157,813.33, 217,783.61 and 86,192.05 is: 118,945.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,813.33 : 217,783.61 = 86,192.05 : x
  2. Step 2: Convert to fraction form
    157,813.33/217,783.61 = 86,192.05/x
  3. Step 3: Cross multiply
    157,813.33x = 217,783.61 × 86,192.05
  4. Step 4: Simplify right side
    157,813.33x = 18,771,215,802.30
  5. Step 5: Solve for x
    x = 18,771,215,802.30/157,813.33
  6. Step 6: Final answer
    x = 118,945.69

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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.