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Finding the Fourth Proportional to 1,860,636, 2,790,979.92 and 530,940

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Solution

The fourth proportional to 1,860,636, 2,790,979.92 and 530,940 is: 796,417.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860,636 : 2,790,979.92 = 530,940 : x
  2. Step 2: Convert to fraction form
    1,860,636/2,790,979.92 = 530,940/x
  3. Step 3: Cross multiply
    1,860,636x = 2,790,979.92 × 530,940
  4. Step 4: Simplify right side
    1,860,636x = 1,481,842,878,724.80
  5. Step 5: Solve for x
    x = 1,481,842,878,724.80/1,860,636
  6. Step 6: Final answer
    x = 796,417.40

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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.