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Finding the Fourth Proportional to 93,386.75, 128,873.72 and 50,945.45

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Solution

The fourth proportional to 93,386.75, 128,873.72 and 50,945.45 is: 70,304.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,386.75 : 128,873.72 = 50,945.45 : x
  2. Step 2: Convert to fraction form
    93,386.75/128,873.72 = 50,945.45/x
  3. Step 3: Cross multiply
    93,386.75x = 128,873.72 × 50,945.45
  4. Step 4: Simplify right side
    93,386.75x = 6,565,529,403.85
  5. Step 5: Solve for x
    x = 6,565,529,403.85/93,386.75
  6. Step 6: Final answer
    x = 70,304.72

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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.