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Finding the Fourth Proportional to 543,911.76, 815,802.84 and 144,581.76

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Solution

The fourth proportional to 543,911.76, 815,802.84 and 144,581.76 is: 216,855.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,911.76 : 815,802.84 = 144,581.76 : x
  2. Step 2: Convert to fraction form
    543,911.76/815,802.84 = 144,581.76/x
  3. Step 3: Cross multiply
    543,911.76x = 815,802.84 × 144,581.76
  4. Step 4: Simplify right side
    543,911.76x = 117,950,210,420.20
  5. Step 5: Solve for x
    x = 117,950,210,420.20/543,911.76
  6. Step 6: Final answer
    x = 216,855.41

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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.