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Finding the Fourth Proportional to 92,984.40, 139,478.16 and 48,697.68

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Solution

The fourth proportional to 92,984.40, 139,478.16 and 48,697.68 is: 73,047.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,984.40 : 139,478.16 = 48,697.68 : x
  2. Step 2: Convert to fraction form
    92,984.40/139,478.16 = 48,697.68/x
  3. Step 3: Cross multiply
    92,984.40x = 139,478.16 × 48,697.68
  4. Step 4: Simplify right side
    92,984.40x = 6,792,262,802.67
  5. Step 5: Solve for x
    x = 6,792,262,802.67/92,984.40
  6. Step 6: Final answer
    x = 73,047.34

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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.