Home / 28,660,356.81-39,552,954.75-21,583,279.89

Finding the Fourth Proportional to 28,660,356.81, 39,552,954.75 and 21,583,279.89

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Solution

The fourth proportional to 28,660,356.81, 39,552,954.75 and 21,583,279.89 is: 29,786,178.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660,356.81 : 39,552,954.75 = 21,583,279.89 : x
  2. Step 2: Convert to fraction form
    28,660,356.81/39,552,954.75 = 21,583,279.89/x
  3. Step 3: Cross multiply
    28,660,356.81x = 39,552,954.75 × 21,583,279.89
  4. Step 4: Simplify right side
    28,660,356.81x = 853,682,492,845,755
  5. Step 5: Solve for x
    x = 853,682,492,845,755/28,660,356.81
  6. Step 6: Final answer
    x = 29,786,178.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.