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Finding the Fourth Proportional to 93,307.20, 139,960.80 and 55,982.40

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Solution

The fourth proportional to 93,307.20, 139,960.80 and 55,982.40 is: 83,973.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,307.20 : 139,960.80 = 55,982.40 : x
  2. Step 2: Convert to fraction form
    93,307.20/139,960.80 = 55,982.40/x
  3. Step 3: Cross multiply
    93,307.20x = 139,960.80 × 55,982.40
  4. Step 4: Simplify right side
    93,307.20x = 7,835,341,489.92
  5. Step 5: Solve for x
    x = 7,835,341,489.92/93,307.20
  6. Step 6: Final answer
    x = 83,973.60

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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.