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Finding the Fourth Proportional to 387,831,212.60, 581,746,818.90 and 387,831,212.60

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Solution

The fourth proportional to 387,831,212.60, 581,746,818.90 and 387,831,212.60 is: 581,746,818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,831,212.60 : 581,746,818.90 = 387,831,212.60 : x
  2. Step 2: Convert to fraction form
    387,831,212.60/581,746,818.90 = 387,831,212.60/x
  3. Step 3: Cross multiply
    387,831,212.60x = 581,746,818.90 × 387,831,212.60
  4. Step 4: Simplify right side
    387,831,212.60x = 225,619,574,200,179,616
  5. Step 5: Solve for x
    x = 225,619,574,200,179,616/387,831,212.60
  6. Step 6: Final answer
    x = 581,746,818.90

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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.