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Finding the Fourth Proportional to 6,501,576.79, 8,978,206.98 and 4,867,146.64

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Solution

The fourth proportional to 6,501,576.79, 8,978,206.98 and 4,867,146.64 is: 6,721,177.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,501,576.79 : 8,978,206.98 = 4,867,146.64 : x
  2. Step 2: Convert to fraction form
    6,501,576.79/8,978,206.98 = 4,867,146.64/x
  3. Step 3: Cross multiply
    6,501,576.79x = 8,978,206.98 × 4,867,146.64
  4. Step 4: Simplify right side
    6,501,576.79x = 43,698,249,935,931.55
  5. Step 5: Solve for x
    x = 43,698,249,935,931.55/6,501,576.79
  6. Step 6: Final answer
    x = 6,721,177.24

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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.