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Finding the Fourth Proportional to 31,129.99, 46,719.99 and 16,347.69

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Solution

The fourth proportional to 31,129.99, 46,719.99 and 16,347.69 is: 24,534.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,129.99 : 46,719.99 = 16,347.69 : x
  2. Step 2: Convert to fraction form
    31,129.99/46,719.99 = 16,347.69/x
  3. Step 3: Cross multiply
    31,129.99x = 46,719.99 × 16,347.69
  4. Step 4: Simplify right side
    31,129.99x = 763,763,913.32
  5. Step 5: Solve for x
    x = 763,763,913.32/31,129.99
  6. Step 6: Final answer
    x = 24,534.67

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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.