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Finding the Fourth Proportional to 354,294,874.80, 530,485,718.40 and 354,294,874.80

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Solution

The fourth proportional to 354,294,874.80, 530,485,718.40 and 354,294,874.80 is: 530,485,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,294,874.80 : 530,485,718.40 = 354,294,874.80 : x
  2. Step 2: Convert to fraction form
    354,294,874.80/530,485,718.40 = 354,294,874.80/x
  3. Step 3: Cross multiply
    354,294,874.80x = 530,485,718.40 × 354,294,874.80
  4. Step 4: Simplify right side
    354,294,874.80x = 187,948,371,183,716,064
  5. Step 5: Solve for x
    x = 187,948,371,183,716,064/354,294,874.80
  6. Step 6: Final answer
    x = 530,485,718.40

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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.