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Finding the Fourth Proportional to 75,279.33, 103,881.96 and 43,458.48

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Solution

The fourth proportional to 75,279.33, 103,881.96 and 43,458.48 is: 59,970.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,279.33 : 103,881.96 = 43,458.48 : x
  2. Step 2: Convert to fraction form
    75,279.33/103,881.96 = 43,458.48/x
  3. Step 3: Cross multiply
    75,279.33x = 103,881.96 × 43,458.48
  4. Step 4: Simplify right side
    75,279.33x = 4,514,552,081.02
  5. Step 5: Solve for x
    x = 4,514,552,081.02/75,279.33
  6. Step 6: Final answer
    x = 59,970.67

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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.