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Finding the Fourth Proportional to 790,712,785.92, 1,186,605,021 and 324,458,502.86

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Solution

The fourth proportional to 790,712,785.92, 1,186,605,021 and 324,458,502.86 is: 486,907,630.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,712,785.92 : 1,186,605,021 = 324,458,502.86 : x
  2. Step 2: Convert to fraction form
    790,712,785.92/1,186,605,021 = 324,458,502.86/x
  3. Step 3: Cross multiply
    790,712,785.92x = 1,186,605,021 × 324,458,502.86
  4. Step 4: Simplify right side
    790,712,785.92x = 385,004,088,599,818,880
  5. Step 5: Solve for x
    x = 385,004,088,599,818,880/790,712,785.92
  6. Step 6: Final answer
    x = 486,907,630.00

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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.