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Finding the Fourth Proportional to 638,604,030.70, 957,906,046.05 and 638,604,030.70

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Solution

The fourth proportional to 638,604,030.70, 957,906,046.05 and 638,604,030.70 is: 957,906,046.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,604,030.70 : 957,906,046.05 = 638,604,030.70 : x
  2. Step 2: Convert to fraction form
    638,604,030.70/957,906,046.05 = 638,604,030.70/x
  3. Step 3: Cross multiply
    638,604,030.70x = 957,906,046.05 × 638,604,030.70
  4. Step 4: Simplify right side
    638,604,030.70x = 611,722,662,039,429,888
  5. Step 5: Solve for x
    x = 611,722,662,039,429,888/638,604,030.70
  6. Step 6: Final answer
    x = 957,906,046.05

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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.