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Finding the Fourth Proportional to 98,784.60, 136,322.49 and 53,462.67

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Solution

The fourth proportional to 98,784.60, 136,322.49 and 53,462.67 is: 73,778.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,784.60 : 136,322.49 = 53,462.67 : x
  2. Step 2: Convert to fraction form
    98,784.60/136,322.49 = 53,462.67/x
  3. Step 3: Cross multiply
    98,784.60x = 136,322.49 × 53,462.67
  4. Step 4: Simplify right side
    98,784.60x = 7,288,164,296.45
  5. Step 5: Solve for x
    x = 7,288,164,296.45/98,784.60
  6. Step 6: Final answer
    x = 73,778.34

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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.