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Finding the Fourth Proportional to 139,968,001.80, 209,952,002.70 and 133,590,709.80

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Solution

The fourth proportional to 139,968,001.80, 209,952,002.70 and 133,590,709.80 is: 200,386,064.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,001.80 : 209,952,002.70 = 133,590,709.80 : x
  2. Step 2: Convert to fraction form
    139,968,001.80/209,952,002.70 = 133,590,709.80/x
  3. Step 3: Cross multiply
    139,968,001.80x = 209,952,002.70 × 133,590,709.80
  4. Step 4: Simplify right side
    139,968,001.80x = 28,047,637,064,624,516
  5. Step 5: Solve for x
    x = 28,047,637,064,624,516/139,968,001.80
  6. Step 6: Final answer
    x = 200,386,064.70

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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.