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Finding the Fourth Proportional to 139,235,655.53, 208,853,483.29 and 139,235,655.53

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Solution

The fourth proportional to 139,235,655.53, 208,853,483.29 and 139,235,655.53 is: 208,853,483.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,235,655.53 : 208,853,483.29 = 139,235,655.53 : x
  2. Step 2: Convert to fraction form
    139,235,655.53/208,853,483.29 = 139,235,655.53/x
  3. Step 3: Cross multiply
    139,235,655.53x = 208,853,483.29 × 139,235,655.53
  4. Step 4: Simplify right side
    139,235,655.53x = 29,079,851,654,214,696
  5. Step 5: Solve for x
    x = 29,079,851,654,214,696/139,235,655.53
  6. Step 6: Final answer
    x = 208,853,483.29

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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.