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Finding the Fourth Proportional to 996,670.22, 1,375,316.63 and 555,111.11

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Solution

The fourth proportional to 996,670.22, 1,375,316.63 and 555,111.11 is: 766,004.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,670.22 : 1,375,316.63 = 555,111.11 : x
  2. Step 2: Convert to fraction form
    996,670.22/1,375,316.63 = 555,111.11/x
  3. Step 3: Cross multiply
    996,670.22x = 1,375,316.63 × 555,111.11
  4. Step 4: Simplify right side
    996,670.22x = 763,453,541,354.44
  5. Step 5: Solve for x
    x = 763,453,541,354.44/996,670.22
  6. Step 6: Final answer
    x = 766,004.16

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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.