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Finding the Fourth Proportional to 142,019,792.40, 213,029,688.60 and 142,019,792.40

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Solution

The fourth proportional to 142,019,792.40, 213,029,688.60 and 142,019,792.40 is: 213,029,688.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,019,792.40 : 213,029,688.60 = 142,019,792.40 : x
  2. Step 2: Convert to fraction form
    142,019,792.40/213,029,688.60 = 142,019,792.40/x
  3. Step 3: Cross multiply
    142,019,792.40x = 213,029,688.60 × 142,019,792.40
  4. Step 4: Simplify right side
    142,019,792.40x = 30,254,432,150,008,648
  5. Step 5: Solve for x
    x = 30,254,432,150,008,648/142,019,792.40
  6. Step 6: Final answer
    x = 213,029,688.60

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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.