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Finding the Fourth Proportional to 1,225,612.80, 1,837,763.10 and 514,837.80

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Solution

The fourth proportional to 1,225,612.80, 1,837,763.10 and 514,837.80 is: 771,981.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,612.80 : 1,837,763.10 = 514,837.80 : x
  2. Step 2: Convert to fraction form
    1,225,612.80/1,837,763.10 = 514,837.80/x
  3. Step 3: Cross multiply
    1,225,612.80x = 1,837,763.10 × 514,837.80
  4. Step 4: Simplify right side
    1,225,612.80x = 946,149,911,325.18
  5. Step 5: Solve for x
    x = 946,149,911,325.18/1,225,612.80
  6. Step 6: Final answer
    x = 771,981.09

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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.