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Finding the Fourth Proportional to 93,429.74, 128,935.89 and 53,149.34

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Solution

The fourth proportional to 93,429.74, 128,935.89 and 53,149.34 is: 73,347.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,429.74 : 128,935.89 = 53,149.34 : x
  2. Step 2: Convert to fraction form
    93,429.74/128,935.89 = 53,149.34/x
  3. Step 3: Cross multiply
    93,429.74x = 128,935.89 × 53,149.34
  4. Step 4: Simplify right side
    93,429.74x = 6,852,857,455.81
  5. Step 5: Solve for x
    x = 6,852,857,455.81/93,429.74
  6. Step 6: Final answer
    x = 73,347.71

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1.5x scale

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.