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Finding the Fourth Proportional to 395,924,622.60, 555,442,384.20 and 395,924,622.60

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Solution

The fourth proportional to 395,924,622.60, 555,442,384.20 and 395,924,622.60 is: 555,442,384.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,924,622.60 : 555,442,384.20 = 395,924,622.60 : x
  2. Step 2: Convert to fraction form
    395,924,622.60/555,442,384.20 = 395,924,622.60/x
  3. Step 3: Cross multiply
    395,924,622.60x = 555,442,384.20 × 395,924,622.60
  4. Step 4: Simplify right side
    395,924,622.60x = 219,913,316,340,429,248
  5. Step 5: Solve for x
    x = 219,913,316,340,429,248/395,924,622.60
  6. Step 6: Final answer
    x = 555,442,384.20

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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.