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Finding the Fourth Proportional to 83,970.89, 115,888.01 and 62,713.25

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Solution

The fourth proportional to 83,970.89, 115,888.01 and 62,713.25 is: 86,550.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,970.89 : 115,888.01 = 62,713.25 : x
  2. Step 2: Convert to fraction form
    83,970.89/115,888.01 = 62,713.25/x
  3. Step 3: Cross multiply
    83,970.89x = 115,888.01 × 62,713.25
  4. Step 4: Simplify right side
    83,970.89x = 7,267,712,850.13
  5. Step 5: Solve for x
    x = 7,267,712,850.13/83,970.89
  6. Step 6: Final answer
    x = 86,550.39

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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.