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Finding the Fourth Proportional to 98,061.60, 135,354.58 and 84,775.58

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Solution

The fourth proportional to 98,061.60, 135,354.58 and 84,775.58 is: 117,015.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,061.60 : 135,354.58 = 84,775.58 : x
  2. Step 2: Convert to fraction form
    98,061.60/135,354.58 = 84,775.58/x
  3. Step 3: Cross multiply
    98,061.60x = 135,354.58 × 84,775.58
  4. Step 4: Simplify right side
    98,061.60x = 11,474,762,644.02
  5. Step 5: Solve for x
    x = 11,474,762,644.02/98,061.60
  6. Step 6: Final answer
    x = 117,015.86

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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.