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Finding the Fourth Proportional to 1,345,411, 1,856,681.70 and 733,558.78

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Solution

The fourth proportional to 1,345,411, 1,856,681.70 and 733,558.78 is: 1,012,319.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,411 : 1,856,681.70 = 733,558.78 : x
  2. Step 2: Convert to fraction form
    1,345,411/1,856,681.70 = 733,558.78/x
  3. Step 3: Cross multiply
    1,345,411x = 1,856,681.70 × 733,558.78
  4. Step 4: Simplify right side
    1,345,411x = 1,361,985,162,700.33
  5. Step 5: Solve for x
    x = 1,361,985,162,700.33/1,345,411
  6. Step 6: Final answer
    x = 1,012,319.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.