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Finding the Fourth Proportional to 79,501.66, 109,688.34 and 47,658.94

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Solution

The fourth proportional to 79,501.66, 109,688.34 and 47,658.94 is: 65,754.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,501.66 : 109,688.34 = 47,658.94 : x
  2. Step 2: Convert to fraction form
    79,501.66/109,688.34 = 47,658.94/x
  3. Step 3: Cross multiply
    79,501.66x = 109,688.34 × 47,658.94
  4. Step 4: Simplify right side
    79,501.66x = 5,227,630,014.76
  5. Step 5: Solve for x
    x = 5,227,630,014.76/79,501.66
  6. Step 6: Final answer
    x = 65,754.98

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1.5x scale

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.