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Finding the Fourth Proportional to 103,416.84, 142,715.16 and 58,704.84

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Solution

The fourth proportional to 103,416.84, 142,715.16 and 58,704.84 is: 81,012.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,416.84 : 142,715.16 = 58,704.84 : x
  2. Step 2: Convert to fraction form
    103,416.84/142,715.16 = 58,704.84/x
  3. Step 3: Cross multiply
    103,416.84x = 142,715.16 × 58,704.84
  4. Step 4: Simplify right side
    103,416.84x = 8,378,070,633.37
  5. Step 5: Solve for x
    x = 8,378,070,633.37/103,416.84
  6. Step 6: Final answer
    x = 81,012.63

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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.