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Finding the Fourth Proportional to 903,886,526.40, 1,354,014,882.72 and 765,117,896.64

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Solution

The fourth proportional to 903,886,526.40, 1,354,014,882.72 and 765,117,896.64 is: 1,146,140,570.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,886,526.40 : 1,354,014,882.72 = 765,117,896.64 : x
  2. Step 2: Convert to fraction form
    903,886,526.40/1,354,014,882.72 = 765,117,896.64/x
  3. Step 3: Cross multiply
    903,886,526.40x = 1,354,014,882.72 × 765,117,896.64
  4. Step 4: Simplify right side
    903,886,526.40x = 1,035,981,019,085,982,720
  5. Step 5: Solve for x
    x = 1,035,981,019,085,982,720/903,886,526.40
  6. Step 6: Final answer
    x = 1,146,140,570.56

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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.