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Finding the Fourth Proportional to 86,089.78, 118,813.53 and 52,117.00

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Solution

The fourth proportional to 86,089.78, 118,813.53 and 52,117.00 is: 71,927.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,089.78 : 118,813.53 = 52,117.00 : x
  2. Step 2: Convert to fraction form
    86,089.78/118,813.53 = 52,117.00/x
  3. Step 3: Cross multiply
    86,089.78x = 118,813.53 × 52,117.00
  4. Step 4: Simplify right side
    86,089.78x = 6,192,204,445.98
  5. Step 5: Solve for x
    x = 6,192,204,445.98/86,089.78
  6. Step 6: Final answer
    x = 71,927.29

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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.