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Finding the Fourth Proportional to 1,231,818, 1,699,913.96 and 666,570

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Solution

The fourth proportional to 1,231,818, 1,699,913.96 and 666,570 is: 919,869.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,818 : 1,699,913.96 = 666,570 : x
  2. Step 2: Convert to fraction form
    1,231,818/1,699,913.96 = 666,570/x
  3. Step 3: Cross multiply
    1,231,818x = 1,699,913.96 × 666,570
  4. Step 4: Simplify right side
    1,231,818x = 1,133,111,648,317.20
  5. Step 5: Solve for x
    x = 1,133,111,648,317.20/1,231,818
  6. Step 6: Final answer
    x = 919,869.37

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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.