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Finding the Fourth Proportional to 1,911,316, 2,866,974 and 581,620

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Solution

The fourth proportional to 1,911,316, 2,866,974 and 581,620 is: 872,430

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911,316 : 2,866,974 = 581,620 : x
  2. Step 2: Convert to fraction form
    1,911,316/2,866,974 = 581,620/x
  3. Step 3: Cross multiply
    1,911,316x = 2,866,974 × 581,620
  4. Step 4: Simplify right side
    1,911,316x = 1,667,489,417,880
  5. Step 5: Solve for x
    x = 1,667,489,417,880/1,911,316
  6. Step 6: Final answer
    x = 872,430

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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.