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Finding the Fourth Proportional to 66,426,652.20, 99,639,978.30 and 48,286,799.40

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Solution

The fourth proportional to 66,426,652.20, 99,639,978.30 and 48,286,799.40 is: 72,430,199.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,426,652.20 : 99,639,978.30 = 48,286,799.40 : x
  2. Step 2: Convert to fraction form
    66,426,652.20/99,639,978.30 = 48,286,799.40/x
  3. Step 3: Cross multiply
    66,426,652.20x = 99,639,978.30 × 48,286,799.40
  4. Step 4: Simplify right side
    66,426,652.20x = 4,811,295,644,392,453
  5. Step 5: Solve for x
    x = 4,811,295,644,392,453/66,426,652.20
  6. Step 6: Final answer
    x = 72,430,199.10

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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.