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Finding the Fourth Proportional to 58,683.80, 81,019.78 and 45,228.08

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Solution

The fourth proportional to 58,683.80, 81,019.78 and 45,228.08 is: 62,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,683.80 : 81,019.78 = 45,228.08 : x
  2. Step 2: Convert to fraction form
    58,683.80/81,019.78 = 45,228.08/x
  3. Step 3: Cross multiply
    58,683.80x = 81,019.78 × 45,228.08
  4. Step 4: Simplify right side
    58,683.80x = 3,664,369,091.42
  5. Step 5: Solve for x
    x = 3,664,369,091.42/58,683.80
  6. Step 6: Final answer
    x = 62,442.60

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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.