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Finding the Fourth Proportional to 139,968,128.02, 209,952,192.03 and 139,968,128.02

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Solution

The fourth proportional to 139,968,128.02, 209,952,192.03 and 139,968,128.02 is: 209,952,192.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,128.02 : 209,952,192.03 = 139,968,128.02 : x
  2. Step 2: Convert to fraction form
    139,968,128.02/209,952,192.03 = 139,968,128.02/x
  3. Step 3: Cross multiply
    139,968,128.02x = 209,952,192.03 × 139,968,128.02
  4. Step 4: Simplify right side
    139,968,128.02x = 29,386,615,292,134,668
  5. Step 5: Solve for x
    x = 29,386,615,292,134,668/139,968,128.02
  6. Step 6: Final answer
    x = 209,952,192.03

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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.