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Finding the Fourth Proportional to 993,679.22, 1,490,859.04 and 424,825.94

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Solution

The fourth proportional to 993,679.22, 1,490,859.04 and 424,825.94 is: 637,384.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,679.22 : 1,490,859.04 = 424,825.94 : x
  2. Step 2: Convert to fraction form
    993,679.22/1,490,859.04 = 424,825.94/x
  3. Step 3: Cross multiply
    993,679.22x = 1,490,859.04 × 424,825.94
  4. Step 4: Simplify right side
    993,679.22x = 633,355,593,075.50
  5. Step 5: Solve for x
    x = 633,355,593,075.50/993,679.22
  6. Step 6: Final answer
    x = 637,384.36

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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.