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Finding the Fourth Proportional to 1,328,670, 1,833,663.15 and 755,894.70

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Solution

The fourth proportional to 1,328,670, 1,833,663.15 and 755,894.70 is: 1,043,190.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,670 : 1,833,663.15 = 755,894.70 : x
  2. Step 2: Convert to fraction form
    1,328,670/1,833,663.15 = 755,894.70/x
  3. Step 3: Cross multiply
    1,328,670x = 1,833,663.15 × 755,894.70
  4. Step 4: Simplify right side
    1,328,670x = 1,386,056,256,670.31
  5. Step 5: Solve for x
    x = 1,386,056,256,670.31/1,328,670
  6. Step 6: Final answer
    x = 1,043,190.75

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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.