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Finding the Fourth Proportional to 144,466.40, 216,613.20 and 74,482.40

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Solution

The fourth proportional to 144,466.40, 216,613.20 and 74,482.40 is: 111,679.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,466.40 : 216,613.20 = 74,482.40 : x
  2. Step 2: Convert to fraction form
    144,466.40/216,613.20 = 74,482.40/x
  3. Step 3: Cross multiply
    144,466.40x = 216,613.20 × 74,482.40
  4. Step 4: Simplify right side
    144,466.40x = 16,133,871,007.68
  5. Step 5: Solve for x
    x = 16,133,871,007.68/144,466.40
  6. Step 6: Final answer
    x = 111,679.05

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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.