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Finding the Fourth Proportional to 55,486.81, 83,082.60 and 43,358.08

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Solution

The fourth proportional to 55,486.81, 83,082.60 and 43,358.08 is: 64,921.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,486.81 : 83,082.60 = 43,358.08 : x
  2. Step 2: Convert to fraction form
    55,486.81/83,082.60 = 43,358.08/x
  3. Step 3: Cross multiply
    55,486.81x = 83,082.60 × 43,358.08
  4. Step 4: Simplify right side
    55,486.81x = 3,602,302,017.41
  5. Step 5: Solve for x
    x = 3,602,302,017.41/55,486.81
  6. Step 6: Final answer
    x = 64,921.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.