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Finding the Fourth Proportional to 18,795,430.40, 28,193,145.60 and 14,012,461.40

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Solution

The fourth proportional to 18,795,430.40, 28,193,145.60 and 14,012,461.40 is: 21,018,692.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,795,430.40 : 28,193,145.60 = 14,012,461.40 : x
  2. Step 2: Convert to fraction form
    18,795,430.40/28,193,145.60 = 14,012,461.40/x
  3. Step 3: Cross multiply
    18,795,430.40x = 28,193,145.60 × 14,012,461.40
  4. Step 4: Simplify right side
    18,795,430.40x = 395,055,364,464,579.88
  5. Step 5: Solve for x
    x = 395,055,364,464,579.88/18,795,430.40
  6. Step 6: Final answer
    x = 21,018,692.10

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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.