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Finding the Fourth Proportional to 139,598,031.02, 209,492,696.18 and 48,721,620.02

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Solution

The fourth proportional to 139,598,031.02, 209,492,696.18 and 48,721,620.02 is: 73,115,813.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,598,031.02 : 209,492,696.18 = 48,721,620.02 : x
  2. Step 2: Convert to fraction form
    139,598,031.02/209,492,696.18 = 48,721,620.02/x
  3. Step 3: Cross multiply
    139,598,031.02x = 209,492,696.18 × 48,721,620.02
  4. Step 4: Simplify right side
    139,598,031.02x = 10,206,823,539,321,606
  5. Step 5: Solve for x
    x = 10,206,823,539,321,606/139,598,031.02
  6. Step 6: Final answer
    x = 73,115,813.06

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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.