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Finding the Fourth Proportional to 60,390.10, 84,721.10 and 60,390.10

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Solution

The fourth proportional to 60,390.10, 84,721.10 and 60,390.10 is: 84,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,390.10 : 84,721.10 = 60,390.10 : x
  2. Step 2: Convert to fraction form
    60,390.10/84,721.10 = 60,390.10/x
  3. Step 3: Cross multiply
    60,390.10x = 84,721.10 × 60,390.10
  4. Step 4: Simplify right side
    60,390.10x = 5,116,315,701.11
  5. Step 5: Solve for x
    x = 5,116,315,701.11/60,390.10
  6. Step 6: Final answer
    x = 84,721.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.