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Finding the Fourth Proportional to 55,123.92, 76,069.96 and 29,973.20

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Solution

The fourth proportional to 55,123.92, 76,069.96 and 29,973.20 is: 41,362.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,123.92 : 76,069.96 = 29,973.20 : x
  2. Step 2: Convert to fraction form
    55,123.92/76,069.96 = 29,973.20/x
  3. Step 3: Cross multiply
    55,123.92x = 76,069.96 × 29,973.20
  4. Step 4: Simplify right side
    55,123.92x = 2,280,060,125.07
  5. Step 5: Solve for x
    x = 2,280,060,125.07/55,123.92
  6. Step 6: Final answer
    x = 41,362.45

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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.