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Finding the Fourth Proportional to 58,956.84, 81,303.55 and 38,788.58

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Solution

The fourth proportional to 58,956.84, 81,303.55 and 38,788.58 is: 53,490.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,956.84 : 81,303.55 = 38,788.58 : x
  2. Step 2: Convert to fraction form
    58,956.84/81,303.55 = 38,788.58/x
  3. Step 3: Cross multiply
    58,956.84x = 81,303.55 × 38,788.58
  4. Step 4: Simplify right side
    58,956.84x = 3,153,649,359.75
  5. Step 5: Solve for x
    x = 3,153,649,359.75/58,956.84
  6. Step 6: Final answer
    x = 53,490.81

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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.