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Finding the Fourth Proportional to 210,036,715.70, 315,055,073.55 and 210,036,715.70

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Solution

The fourth proportional to 210,036,715.70, 315,055,073.55 and 210,036,715.70 is: 315,055,073.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,036,715.70 : 315,055,073.55 = 210,036,715.70 : x
  2. Step 2: Convert to fraction form
    210,036,715.70/315,055,073.55 = 210,036,715.70/x
  3. Step 3: Cross multiply
    210,036,715.70x = 315,055,073.55 × 210,036,715.70
  4. Step 4: Simplify right side
    210,036,715.70x = 66,173,132,913,063,936
  5. Step 5: Solve for x
    x = 66,173,132,913,063,936/210,036,715.70
  6. Step 6: Final answer
    x = 315,055,073.55

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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.