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Finding the Fourth Proportional to 99,799,514.20, 149,699,271.30 and 65,362,137.40

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Solution

The fourth proportional to 99,799,514.20, 149,699,271.30 and 65,362,137.40 is: 98,043,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,799,514.20 : 149,699,271.30 = 65,362,137.40 : x
  2. Step 2: Convert to fraction form
    99,799,514.20/149,699,271.30 = 65,362,137.40/x
  3. Step 3: Cross multiply
    99,799,514.20x = 149,699,271.30 × 65,362,137.40
  4. Step 4: Simplify right side
    99,799,514.20x = 9,784,664,339,390,478
  5. Step 5: Solve for x
    x = 9,784,664,339,390,478/99,799,514.20
  6. Step 6: Final answer
    x = 98,043,206.10

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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.