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Finding the Fourth Proportional to 98,605.60, 136,085.62 and 60,390.06

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Solution

The fourth proportional to 98,605.60, 136,085.62 and 60,390.06 is: 83,344.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,605.60 : 136,085.62 = 60,390.06 : x
  2. Step 2: Convert to fraction form
    98,605.60/136,085.62 = 60,390.06/x
  3. Step 3: Cross multiply
    98,605.60x = 136,085.62 × 60,390.06
  4. Step 4: Simplify right side
    98,605.60x = 8,218,218,208.87
  5. Step 5: Solve for x
    x = 8,218,218,208.87/98,605.60
  6. Step 6: Final answer
    x = 83,344.33

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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.