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Finding the Fourth Proportional to 1,320,962.92, 1,822,973.92 and 740,210.56

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Solution

The fourth proportional to 1,320,962.92, 1,822,973.92 and 740,210.56 is: 1,021,515.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,962.92 : 1,822,973.92 = 740,210.56 : x
  2. Step 2: Convert to fraction form
    1,320,962.92/1,822,973.92 = 740,210.56/x
  3. Step 3: Cross multiply
    1,320,962.92x = 1,822,973.92 × 740,210.56
  4. Step 4: Simplify right side
    1,320,962.92x = 1,349,384,546,188.60
  5. Step 5: Solve for x
    x = 1,349,384,546,188.60/1,320,962.92
  6. Step 6: Final answer
    x = 1,021,515.84

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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.