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Finding the Fourth Proportional to 111,756.48, 154,214.60 and 65,808.84

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Solution

The fourth proportional to 111,756.48, 154,214.60 and 65,808.84 is: 90,810.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,756.48 : 154,214.60 = 65,808.84 : x
  2. Step 2: Convert to fraction form
    111,756.48/154,214.60 = 65,808.84/x
  3. Step 3: Cross multiply
    111,756.48x = 154,214.60 × 65,808.84
  4. Step 4: Simplify right side
    111,756.48x = 10,148,683,937.06
  5. Step 5: Solve for x
    x = 10,148,683,937.06/111,756.48
  6. Step 6: Final answer
    x = 90,810.70

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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.