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Finding the Fourth Proportional to 478,831,953.60, 718,247,930.40 and 478,831,953.60

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Solution

The fourth proportional to 478,831,953.60, 718,247,930.40 and 478,831,953.60 is: 718,247,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,831,953.60 : 718,247,930.40 = 478,831,953.60 : x
  2. Step 2: Convert to fraction form
    478,831,953.60/718,247,930.40 = 478,831,953.60/x
  3. Step 3: Cross multiply
    478,831,953.60x = 718,247,930.40 × 478,831,953.60
  4. Step 4: Simplify right side
    478,831,953.60x = 343,920,059,682,588,864
  5. Step 5: Solve for x
    x = 343,920,059,682,588,864/478,831,953.60
  6. Step 6: Final answer
    x = 718,247,930.40

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Double scale
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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.