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Finding the Fourth Proportional to 98,644.73, 136,130.72 and 53,323.56

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Solution

The fourth proportional to 98,644.73, 136,130.72 and 53,323.56 is: 73,587.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,644.73 : 136,130.72 = 53,323.56 : x
  2. Step 2: Convert to fraction form
    98,644.73/136,130.72 = 53,323.56/x
  3. Step 3: Cross multiply
    98,644.73x = 136,130.72 × 53,323.56
  4. Step 4: Simplify right side
    98,644.73x = 7,258,974,349.15
  5. Step 5: Solve for x
    x = 7,258,974,349.15/98,644.73
  6. Step 6: Final answer
    x = 73,587.05

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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.