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Finding the Fourth Proportional to 93,386.40, 128,874.16 and 50,945.80

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Solution

The fourth proportional to 93,386.40, 128,874.16 and 50,945.80 is: 70,305.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,386.40 : 128,874.16 = 50,945.80 : x
  2. Step 2: Convert to fraction form
    93,386.40/128,874.16 = 50,945.80/x
  3. Step 3: Cross multiply
    93,386.40x = 128,874.16 × 50,945.80
  4. Step 4: Simplify right side
    93,386.40x = 6,565,597,180.53
  5. Step 5: Solve for x
    x = 6,565,597,180.53/93,386.40
  6. Step 6: Final answer
    x = 70,305.71

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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.