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Finding the Fourth Proportional to 58,313.40, 87,448.14 and 18,859.92

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Solution

The fourth proportional to 58,313.40, 87,448.14 and 18,859.92 is: 28,282.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,313.40 : 87,448.14 = 18,859.92 : x
  2. Step 2: Convert to fraction form
    58,313.40/87,448.14 = 18,859.92/x
  3. Step 3: Cross multiply
    58,313.40x = 87,448.14 × 18,859.92
  4. Step 4: Simplify right side
    58,313.40x = 1,649,264,924.55
  5. Step 5: Solve for x
    x = 1,649,264,924.55/58,313.40
  6. Step 6: Final answer
    x = 28,282.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.