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Finding the Fourth Proportional to 86,881.18, 119,860.40 and 52,862.40

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Solution

The fourth proportional to 86,881.18, 119,860.40 and 52,862.40 is: 72,928.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,881.18 : 119,860.40 = 52,862.40 : x
  2. Step 2: Convert to fraction form
    86,881.18/119,860.40 = 52,862.40/x
  3. Step 3: Cross multiply
    86,881.18x = 119,860.40 × 52,862.40
  4. Step 4: Simplify right side
    86,881.18x = 6,336,108,408.96
  5. Step 5: Solve for x
    x = 6,336,108,408.96/86,881.18
  6. Step 6: Final answer
    x = 72,928.43

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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.