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Finding the Fourth Proportional to 651,952, 899,881.40 and 393,787.92

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Solution

The fourth proportional to 651,952, 899,881.40 and 393,787.92 is: 543,540.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,952 : 899,881.40 = 393,787.92 : x
  2. Step 2: Convert to fraction form
    651,952/899,881.40 = 393,787.92/x
  3. Step 3: Cross multiply
    651,952x = 899,881.40 × 393,787.92
  4. Step 4: Simplify right side
    651,952x = 354,362,424,752.69
  5. Step 5: Solve for x
    x = 354,362,424,752.69/651,952
  6. Step 6: Final answer
    x = 543,540.67

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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.