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Finding the Fourth Proportional to 139,590,683.10, 209,386,024.65 and 139,590,683.10

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Solution

The fourth proportional to 139,590,683.10, 209,386,024.65 and 139,590,683.10 is: 209,386,024.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,590,683.10 : 209,386,024.65 = 139,590,683.10 : x
  2. Step 2: Convert to fraction form
    139,590,683.10/209,386,024.65 = 139,590,683.10/x
  3. Step 3: Cross multiply
    139,590,683.10x = 209,386,024.65 × 139,590,683.10
  4. Step 4: Simplify right side
    139,590,683.10x = 29,228,338,212,486,936
  5. Step 5: Solve for x
    x = 29,228,338,212,486,936/139,590,683.10
  6. Step 6: Final answer
    x = 209,386,024.65

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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.