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Finding the Fourth Proportional to 651,672,748.80, 977,509,123.20 and 376,173,734.40

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Solution

The fourth proportional to 651,672,748.80, 977,509,123.20 and 376,173,734.40 is: 564,260,601.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,672,748.80 : 977,509,123.20 = 376,173,734.40 : x
  2. Step 2: Convert to fraction form
    651,672,748.80/977,509,123.20 = 376,173,734.40/x
  3. Step 3: Cross multiply
    651,672,748.80x = 977,509,123.20 × 376,173,734.40
  4. Step 4: Simplify right side
    651,672,748.80x = 367,713,257,284,213,696
  5. Step 5: Solve for x
    x = 367,713,257,284,213,696/651,672,748.80
  6. Step 6: Final answer
    x = 564,260,601.60

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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.