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Finding the Fourth Proportional to 58,720.60, 87,935.10 and 47,056.60

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Solution

The fourth proportional to 58,720.60, 87,935.10 and 47,056.60 is: 70,468.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,720.60 : 87,935.10 = 47,056.60 : x
  2. Step 2: Convert to fraction form
    58,720.60/87,935.10 = 47,056.60/x
  3. Step 3: Cross multiply
    58,720.60x = 87,935.10 × 47,056.60
  4. Step 4: Simplify right side
    58,720.60x = 4,137,926,826.66
  5. Step 5: Solve for x
    x = 4,137,926,826.66/58,720.60
  6. Step 6: Final answer
    x = 70,468.06

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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.