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Finding the Fourth Proportional to 98,009.90, 146,820.45 and 56,408.30

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Solution

The fourth proportional to 98,009.90, 146,820.45 and 56,408.30 is: 84,500.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,009.90 : 146,820.45 = 56,408.30 : x
  2. Step 2: Convert to fraction form
    98,009.90/146,820.45 = 56,408.30/x
  3. Step 3: Cross multiply
    98,009.90x = 146,820.45 × 56,408.30
  4. Step 4: Simplify right side
    98,009.90x = 8,281,891,989.74
  5. Step 5: Solve for x
    x = 8,281,891,989.74/98,009.90
  6. Step 6: Final answer
    x = 84,500.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.