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Finding the Fourth Proportional to 907,509.70, 1,362,248.70 and 570,930.40

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Solution

The fourth proportional to 907,509.70, 1,362,248.70 and 570,930.40 is: 857,014.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,509.70 : 1,362,248.70 = 570,930.40 : x
  2. Step 2: Convert to fraction form
    907,509.70/1,362,248.70 = 570,930.40/x
  3. Step 3: Cross multiply
    907,509.70x = 1,362,248.70 × 570,930.40
  4. Step 4: Simplify right side
    907,509.70x = 777,749,195,190.48
  5. Step 5: Solve for x
    x = 777,749,195,190.48/907,509.70
  6. Step 6: Final answer
    x = 857,014.75

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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.