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Finding the Fourth Proportional to 93,973.80, 129,685.50 and 51,529.80

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Solution

The fourth proportional to 93,973.80, 129,685.50 and 51,529.80 is: 71,112.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,973.80 : 129,685.50 = 51,529.80 : x
  2. Step 2: Convert to fraction form
    93,973.80/129,685.50 = 51,529.80/x
  3. Step 3: Cross multiply
    93,973.80x = 129,685.50 × 51,529.80
  4. Step 4: Simplify right side
    93,973.80x = 6,682,667,877.90
  5. Step 5: Solve for x
    x = 6,682,667,877.90/93,973.80
  6. Step 6: Final answer
    x = 71,112.03

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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.