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Finding the Fourth Proportional to 71,773,180.40, 107,531,466.60 and 43,678,492.40

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Solution

The fourth proportional to 71,773,180.40, 107,531,466.60 and 43,678,492.40 is: 65,439,657.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,773,180.40 : 107,531,466.60 = 43,678,492.40 : x
  2. Step 2: Convert to fraction form
    71,773,180.40/107,531,466.60 = 43,678,492.40/x
  3. Step 3: Cross multiply
    71,773,180.40x = 107,531,466.60 × 43,678,492.40
  4. Step 4: Simplify right side
    71,773,180.40x = 4,696,812,346,648,953
  5. Step 5: Solve for x
    x = 4,696,812,346,648,953/71,773,180.40
  6. Step 6: Final answer
    x = 65,439,657.55

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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.