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Finding the Fourth Proportional to 1,386,170, 1,912,920.36 and 750,266

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Solution

The fourth proportional to 1,386,170, 1,912,920.36 and 750,266 is: 1,035,370.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,170 : 1,912,920.36 = 750,266 : x
  2. Step 2: Convert to fraction form
    1,386,170/1,912,920.36 = 750,266/x
  3. Step 3: Cross multiply
    1,386,170x = 1,912,920.36 × 750,266
  4. Step 4: Simplify right side
    1,386,170x = 1,435,199,106,815.76
  5. Step 5: Solve for x
    x = 1,435,199,106,815.76/1,386,170
  6. Step 6: Final answer
    x = 1,035,370.20

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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.