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Finding the Fourth Proportional to 143,890,109.20, 201,899,649.20 and 143,890,109.20

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Solution

The fourth proportional to 143,890,109.20, 201,899,649.20 and 143,890,109.20 is: 201,899,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,890,109.20 : 201,899,649.20 = 143,890,109.20 : x
  2. Step 2: Convert to fraction form
    143,890,109.20/201,899,649.20 = 143,890,109.20/x
  3. Step 3: Cross multiply
    143,890,109.20x = 201,899,649.20 × 143,890,109.20
  4. Step 4: Simplify right side
    143,890,109.20x = 29,051,362,570,829,688
  5. Step 5: Solve for x
    x = 29,051,362,570,829,688/143,890,109.20
  6. Step 6: Final answer
    x = 201,899,649.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.