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Finding the Fourth Proportional to 157,636.50, 217,537.59 and 86,016.30

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Solution

The fourth proportional to 157,636.50, 217,537.59 and 86,016.30 is: 118,702.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,636.50 : 217,537.59 = 86,016.30 : x
  2. Step 2: Convert to fraction form
    157,636.50/217,537.59 = 86,016.30/x
  3. Step 3: Cross multiply
    157,636.50x = 217,537.59 × 86,016.30
  4. Step 4: Simplify right side
    157,636.50x = 18,711,778,602.72
  5. Step 5: Solve for x
    x = 18,711,778,602.72/157,636.50
  6. Step 6: Final answer
    x = 118,702.07

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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.