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Finding the Fourth Proportional to 89,792.40, 134,623.80 and 58,645.20

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Solution

The fourth proportional to 89,792.40, 134,623.80 and 58,645.20 is: 87,925.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,792.40 : 134,623.80 = 58,645.20 : x
  2. Step 2: Convert to fraction form
    89,792.40/134,623.80 = 58,645.20/x
  3. Step 3: Cross multiply
    89,792.40x = 134,623.80 × 58,645.20
  4. Step 4: Simplify right side
    89,792.40x = 7,895,039,675.76
  5. Step 5: Solve for x
    x = 7,895,039,675.76/89,792.40
  6. Step 6: Final answer
    x = 87,925.48

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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.