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Finding the Fourth Proportional to 93,345.41, 128,824.32 and 53,071.81

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Solution

The fourth proportional to 93,345.41, 128,824.32 and 53,071.81 is: 73,243.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,345.41 : 128,824.32 = 53,071.81 : x
  2. Step 2: Convert to fraction form
    93,345.41/128,824.32 = 53,071.81/x
  3. Step 3: Cross multiply
    93,345.41x = 128,824.32 × 53,071.81
  4. Step 4: Simplify right side
    93,345.41x = 6,836,939,711.38
  5. Step 5: Solve for x
    x = 6,836,939,711.38/93,345.41
  6. Step 6: Final answer
    x = 73,243.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.