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Finding the Fourth Proportional to 884,631.20, 1,323,010.20 and 742,913.60

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Solution

The fourth proportional to 884,631.20, 1,323,010.20 and 742,913.60 is: 1,111,064.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,631.20 : 1,323,010.20 = 742,913.60 : x
  2. Step 2: Convert to fraction form
    884,631.20/1,323,010.20 = 742,913.60/x
  3. Step 3: Cross multiply
    884,631.20x = 1,323,010.20 × 742,913.60
  4. Step 4: Simplify right side
    884,631.20x = 982,882,270,518.72
  5. Step 5: Solve for x
    x = 982,882,270,518.72/884,631.20
  6. Step 6: Final answer
    x = 1,111,064.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.