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Finding the Fourth Proportional to 136,547.80, 204,821.70 and 113,219.80

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Solution

The fourth proportional to 136,547.80, 204,821.70 and 113,219.80 is: 169,829.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,547.80 : 204,821.70 = 113,219.80 : x
  2. Step 2: Convert to fraction form
    136,547.80/204,821.70 = 113,219.80/x
  3. Step 3: Cross multiply
    136,547.80x = 204,821.70 × 113,219.80
  4. Step 4: Simplify right side
    136,547.80x = 23,189,871,909.66
  5. Step 5: Solve for x
    x = 23,189,871,909.66/136,547.80
  6. Step 6: Final answer
    x = 169,829.70

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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.