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Finding the Fourth Proportional to 58,653.72, 87,931.17 and 39,881.16

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Solution

The fourth proportional to 58,653.72, 87,931.17 and 39,881.16 is: 59,788.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,653.72 : 87,931.17 = 39,881.16 : x
  2. Step 2: Convert to fraction form
    58,653.72/87,931.17 = 39,881.16/x
  3. Step 3: Cross multiply
    58,653.72x = 87,931.17 × 39,881.16
  4. Step 4: Simplify right side
    58,653.72x = 3,506,797,059.76
  5. Step 5: Solve for x
    x = 3,506,797,059.76/58,653.72
  6. Step 6: Final answer
    x = 59,788.14

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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.