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Finding the Fourth Proportional to 6,926,920.64, 9,559,574.88 and 3,871,378.88

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Solution

The fourth proportional to 6,926,920.64, 9,559,574.88 and 3,871,378.88 is: 5,342,740.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,926,920.64 : 9,559,574.88 = 3,871,378.88 : x
  2. Step 2: Convert to fraction form
    6,926,920.64/9,559,574.88 = 3,871,378.88/x
  3. Step 3: Cross multiply
    6,926,920.64x = 9,559,574.88 × 3,871,378.88
  4. Step 4: Simplify right side
    6,926,920.64x = 37,008,736,292,210.54
  5. Step 5: Solve for x
    x = 37,008,736,292,210.54/6,926,920.64
  6. Step 6: Final answer
    x = 5,342,740.05

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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.