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Finding the Fourth Proportional to 93,109.77, 128,491.92 and 50,668.74

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Solution

The fourth proportional to 93,109.77, 128,491.92 and 50,668.74 is: 69,923.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,109.77 : 128,491.92 = 50,668.74 : x
  2. Step 2: Convert to fraction form
    93,109.77/128,491.92 = 50,668.74/x
  3. Step 3: Cross multiply
    93,109.77x = 128,491.92 × 50,668.74
  4. Step 4: Simplify right side
    93,109.77x = 6,510,523,686.58
  5. Step 5: Solve for x
    x = 6,510,523,686.58/93,109.77
  6. Step 6: Final answer
    x = 69,923.10

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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.