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Finding the Fourth Proportional to 974,789,427.87, 1,345,201,448.76 and 528,751,674.54

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Solution

The fourth proportional to 974,789,427.87, 1,345,201,448.76 and 528,751,674.54 is: 729,672,992.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    974,789,427.87 : 1,345,201,448.76 = 528,751,674.54 : x
  2. Step 2: Convert to fraction form
    974,789,427.87/1,345,201,448.76 = 528,751,674.54/x
  3. Step 3: Cross multiply
    974,789,427.87x = 1,345,201,448.76 × 528,751,674.54
  4. Step 4: Simplify right side
    974,789,427.87x = 711,277,518,625,484,032
  5. Step 5: Solve for x
    x = 711,277,518,625,484,032/974,789,427.87
  6. Step 6: Final answer
    x = 729,672,992.23

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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.