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Finding the Fourth Proportional to 4,912,978.02, 7,369,467.03 and 1,919,062.50

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Solution

The fourth proportional to 4,912,978.02, 7,369,467.03 and 1,919,062.50 is: 2,878,593.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912,978.02 : 7,369,467.03 = 1,919,062.50 : x
  2. Step 2: Convert to fraction form
    4,912,978.02/7,369,467.03 = 1,919,062.50/x
  3. Step 3: Cross multiply
    4,912,978.02x = 7,369,467.03 × 1,919,062.50
  4. Step 4: Simplify right side
    4,912,978.02x = 14,142,467,822,259.38
  5. Step 5: Solve for x
    x = 14,142,467,822,259.38/4,912,978.02
  6. Step 6: Final answer
    x = 2,878,593.75

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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.