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Finding the Fourth Proportional to 93,476.75, 128,812.52 and 66,571.79

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Solution

The fourth proportional to 93,476.75, 128,812.52 and 66,571.79 is: 91,737.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,476.75 : 128,812.52 = 66,571.79 : x
  2. Step 2: Convert to fraction form
    93,476.75/128,812.52 = 66,571.79/x
  3. Step 3: Cross multiply
    93,476.75x = 128,812.52 × 66,571.79
  4. Step 4: Simplify right side
    93,476.75x = 8,575,280,030.81
  5. Step 5: Solve for x
    x = 8,575,280,030.81/93,476.75
  6. Step 6: Final answer
    x = 91,737.04

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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.