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Finding the Fourth Proportional to 46,632.80, 69,965.40 and 20,356.40

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Solution

The fourth proportional to 46,632.80, 69,965.40 and 20,356.40 is: 30,541.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,632.80 : 69,965.40 = 20,356.40 : x
  2. Step 2: Convert to fraction form
    46,632.80/69,965.40 = 20,356.40/x
  3. Step 3: Cross multiply
    46,632.80x = 69,965.40 × 20,356.40
  4. Step 4: Simplify right side
    46,632.80x = 1,424,243,668.56
  5. Step 5: Solve for x
    x = 1,424,243,668.56/46,632.80
  6. Step 6: Final answer
    x = 30,541.67

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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.