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Finding the Fourth Proportional to 92,856.80, 139,328.40 and 48,533.60

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Solution

The fourth proportional to 92,856.80, 139,328.40 and 48,533.60 is: 72,822.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,856.80 : 139,328.40 = 48,533.60 : x
  2. Step 2: Convert to fraction form
    92,856.80/139,328.40 = 48,533.60/x
  3. Step 3: Cross multiply
    92,856.80x = 139,328.40 × 48,533.60
  4. Step 4: Simplify right side
    92,856.80x = 6,762,108,834.24
  5. Step 5: Solve for x
    x = 6,762,108,834.24/92,856.80
  6. Step 6: Final answer
    x = 72,822.98

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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.