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Finding the Fourth Proportional to 93,135.25, 139,730.46 and 53,720.65

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Solution

The fourth proportional to 93,135.25, 139,730.46 and 53,720.65 is: 80,596.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,135.25 : 139,730.46 = 53,720.65 : x
  2. Step 2: Convert to fraction form
    93,135.25/139,730.46 = 53,720.65/x
  3. Step 3: Cross multiply
    93,135.25x = 139,730.46 × 53,720.65
  4. Step 4: Simplify right side
    93,135.25x = 7,506,411,136.00
  5. Step 5: Solve for x
    x = 7,506,411,136.00/93,135.25
  6. Step 6: Final answer
    x = 80,596.89

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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.