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Finding the Fourth Proportional to 115,176.72, 158,946.45 and 64,194.66

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Solution

The fourth proportional to 115,176.72, 158,946.45 and 64,194.66 is: 88,590.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,176.72 : 158,946.45 = 64,194.66 : x
  2. Step 2: Convert to fraction form
    115,176.72/158,946.45 = 64,194.66/x
  3. Step 3: Cross multiply
    115,176.72x = 158,946.45 × 64,194.66
  4. Step 4: Simplify right side
    115,176.72x = 10,203,513,315.96
  5. Step 5: Solve for x
    x = 10,203,513,315.96/115,176.72
  6. Step 6: Final answer
    x = 88,590.07

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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.