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Finding the Fourth Proportional to 92,656.50, 127,879.70 and 58,668.15

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Solution

The fourth proportional to 92,656.50, 127,879.70 and 58,668.15 is: 80,970.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,656.50 : 127,879.70 = 58,668.15 : x
  2. Step 2: Convert to fraction form
    92,656.50/127,879.70 = 58,668.15/x
  3. Step 3: Cross multiply
    92,656.50x = 127,879.70 × 58,668.15
  4. Step 4: Simplify right side
    92,656.50x = 7,502,465,128.21
  5. Step 5: Solve for x
    x = 7,502,465,128.21/92,656.50
  6. Step 6: Final answer
    x = 80,970.74

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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.