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Finding the Fourth Proportional to 60,571,892.40, 90,857,838.60 and 28,213,040.40

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Solution

The fourth proportional to 60,571,892.40, 90,857,838.60 and 28,213,040.40 is: 42,319,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,571,892.40 : 90,857,838.60 = 28,213,040.40 : x
  2. Step 2: Convert to fraction form
    60,571,892.40/90,857,838.60 = 28,213,040.40/x
  3. Step 3: Cross multiply
    60,571,892.40x = 90,857,838.60 × 28,213,040.40
  4. Step 4: Simplify right side
    60,571,892.40x = 2,563,375,871,078,479
  5. Step 5: Solve for x
    x = 2,563,375,871,078,479/60,571,892.40
  6. Step 6: Final answer
    x = 42,319,560.60

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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.