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Finding the Fourth Proportional to 93,155.29, 139,623.57 and 43,129.71

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Solution

The fourth proportional to 93,155.29, 139,623.57 and 43,129.71 is: 64,643.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,155.29 : 139,623.57 = 43,129.71 : x
  2. Step 2: Convert to fraction form
    93,155.29/139,623.57 = 43,129.71/x
  3. Step 3: Cross multiply
    93,155.29x = 139,623.57 × 43,129.71
  4. Step 4: Simplify right side
    93,155.29x = 6,021,924,083.26
  5. Step 5: Solve for x
    x = 6,021,924,083.26/93,155.29
  6. Step 6: Final answer
    x = 64,643.93

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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.