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Finding the Fourth Proportional to 210,618,111.40, 315,360,296.70 and 210,618,111.40

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Solution

The fourth proportional to 210,618,111.40, 315,360,296.70 and 210,618,111.40 is: 315,360,296.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,618,111.40 : 315,360,296.70 = 210,618,111.40 : x
  2. Step 2: Convert to fraction form
    210,618,111.40/315,360,296.70 = 210,618,111.40/x
  3. Step 3: Cross multiply
    210,618,111.40x = 315,360,296.70 × 210,618,111.40
  4. Step 4: Simplify right side
    210,618,111.40x = 66,420,590,101,497,648
  5. Step 5: Solve for x
    x = 66,420,590,101,497,648/210,618,111.40
  6. Step 6: Final answer
    x = 315,360,296.70

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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.