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Finding the Fourth Proportional to 103,595.70, 142,961.28 and 58,883.70

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Solution

The fourth proportional to 103,595.70, 142,961.28 and 58,883.70 is: 81,259.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,595.70 : 142,961.28 = 58,883.70 : x
  2. Step 2: Convert to fraction form
    103,595.70/142,961.28 = 58,883.70/x
  3. Step 3: Cross multiply
    103,595.70x = 142,961.28 × 58,883.70
  4. Step 4: Simplify right side
    103,595.70x = 8,418,089,123.14
  5. Step 5: Solve for x
    x = 8,418,089,123.14/103,595.70
  6. Step 6: Final answer
    x = 81,259.06

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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.