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Finding the Fourth Proportional to 1,236,749.40, 1,854,929.70 and 437,916.60

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Solution

The fourth proportional to 1,236,749.40, 1,854,929.70 and 437,916.60 is: 656,806.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236,749.40 : 1,854,929.70 = 437,916.60 : x
  2. Step 2: Convert to fraction form
    1,236,749.40/1,854,929.70 = 437,916.60/x
  3. Step 3: Cross multiply
    1,236,749.40x = 1,854,929.70 × 437,916.60
  4. Step 4: Simplify right side
    1,236,749.40x = 812,304,507,463.02
  5. Step 5: Solve for x
    x = 812,304,507,463.02/1,236,749.40
  6. Step 6: Final answer
    x = 656,806.07

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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.