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Finding the Fourth Proportional to 977,644,828.08, 1,348,819,696.20 and 554,213,093.40

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Solution

The fourth proportional to 977,644,828.08, 1,348,819,696.20 and 554,213,093.40 is: 764,626,902.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,644,828.08 : 1,348,819,696.20 = 554,213,093.40 : x
  2. Step 2: Convert to fraction form
    977,644,828.08/1,348,819,696.20 = 554,213,093.40/x
  3. Step 3: Cross multiply
    977,644,828.08x = 1,348,819,696.20 × 554,213,093.40
  4. Step 4: Simplify right side
    977,644,828.08x = 747,533,536,269,850,240
  5. Step 5: Solve for x
    x = 747,533,536,269,850,240/977,644,828.08
  6. Step 6: Final answer
    x = 764,626,902.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.