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Finding the Fourth Proportional to 77,312.40, 115,882.20 and 44,048.40

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Solution

The fourth proportional to 77,312.40, 115,882.20 and 44,048.40 is: 66,023.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,312.40 : 115,882.20 = 44,048.40 : x
  2. Step 2: Convert to fraction form
    77,312.40/115,882.20 = 44,048.40/x
  3. Step 3: Cross multiply
    77,312.40x = 115,882.20 × 44,048.40
  4. Step 4: Simplify right side
    77,312.40x = 5,104,425,498.48
  5. Step 5: Solve for x
    x = 5,104,425,498.48/77,312.40
  6. Step 6: Final answer
    x = 66,023.37

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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.