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Finding the Fourth Proportional to 98,686.60, 136,187.22 and 53,364.42

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Solution

The fourth proportional to 98,686.60, 136,187.22 and 53,364.42 is: 73,642.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,686.60 : 136,187.22 = 53,364.42 : x
  2. Step 2: Convert to fraction form
    98,686.60/136,187.22 = 53,364.42/x
  3. Step 3: Cross multiply
    98,686.60x = 136,187.22 × 53,364.42
  4. Step 4: Simplify right side
    98,686.60x = 7,267,552,206.83
  5. Step 5: Solve for x
    x = 7,267,552,206.83/98,686.60
  6. Step 6: Final answer
    x = 73,642.74

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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.