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Finding the Fourth Proportional to 5,473,868.40, 8,211,580.20 and 1,686,956.40

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Solution

The fourth proportional to 5,473,868.40, 8,211,580.20 and 1,686,956.40 is: 2,530,674.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,473,868.40 : 8,211,580.20 = 1,686,956.40 : x
  2. Step 2: Convert to fraction form
    5,473,868.40/8,211,580.20 = 1,686,956.40/x
  3. Step 3: Cross multiply
    5,473,868.40x = 8,211,580.20 × 1,686,956.40
  4. Step 4: Simplify right side
    5,473,868.40x = 13,852,577,772,503.28
  5. Step 5: Solve for x
    x = 13,852,577,772,503.28/5,473,868.40
  6. Step 6: Final answer
    x = 2,530,674.24

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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.