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Finding the Fourth Proportional to 76,122.55, 105,058.94 and 45,924.18

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Solution

The fourth proportional to 76,122.55, 105,058.94 and 45,924.18 is: 63,381.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,122.55 : 105,058.94 = 45,924.18 : x
  2. Step 2: Convert to fraction form
    76,122.55/105,058.94 = 45,924.18/x
  3. Step 3: Cross multiply
    76,122.55x = 105,058.94 × 45,924.18
  4. Step 4: Simplify right side
    76,122.55x = 4,824,745,638.53
  5. Step 5: Solve for x
    x = 4,824,745,638.53/76,122.55
  6. Step 6: Final answer
    x = 63,381.29

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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.