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Finding the Fourth Proportional to 121,000.80, 181,501.20 and 116,408.10

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Solution

The fourth proportional to 121,000.80, 181,501.20 and 116,408.10 is: 174,612.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,000.80 : 181,501.20 = 116,408.10 : x
  2. Step 2: Convert to fraction form
    121,000.80/181,501.20 = 116,408.10/x
  3. Step 3: Cross multiply
    121,000.80x = 181,501.20 × 116,408.10
  4. Step 4: Simplify right side
    121,000.80x = 21,128,209,839.72
  5. Step 5: Solve for x
    x = 21,128,209,839.72/121,000.80
  6. Step 6: Final answer
    x = 174,612.15

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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.