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Finding the Fourth Proportional to 193,947,644.80, 291,257,390.40 and 103,248,380.80

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Solution

The fourth proportional to 193,947,644.80, 291,257,390.40 and 103,248,380.80 is: 155,051,400.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,947,644.80 : 291,257,390.40 = 103,248,380.80 : x
  2. Step 2: Convert to fraction form
    193,947,644.80/291,257,390.40 = 103,248,380.80/x
  3. Step 3: Cross multiply
    193,947,644.80x = 291,257,390.40 × 103,248,380.80
  4. Step 4: Simplify right side
    193,947,644.80x = 30,071,853,954,833,460
  5. Step 5: Solve for x
    x = 30,071,853,954,833,460/193,947,644.80
  6. Step 6: Final answer
    x = 155,051,400.53

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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.