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Finding the Fourth Proportional to 74,314,085.70, 111,471,128.55 and 74,314,085.70

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Solution

The fourth proportional to 74,314,085.70, 111,471,128.55 and 74,314,085.70 is: 111,471,128.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,314,085.70 : 111,471,128.55 = 74,314,085.70 : x
  2. Step 2: Convert to fraction form
    74,314,085.70/111,471,128.55 = 74,314,085.70/x
  3. Step 3: Cross multiply
    74,314,085.70x = 111,471,128.55 × 74,314,085.70
  4. Step 4: Simplify right side
    74,314,085.70x = 8,283,875,000,140,417
  5. Step 5: Solve for x
    x = 8,283,875,000,140,417/74,314,085.70
  6. Step 6: Final answer
    x = 111,471,128.55

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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.