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Finding the Fourth Proportional to 1,249,986.21, 1,724,983.74 and 677,026.50

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Solution

The fourth proportional to 1,249,986.21, 1,724,983.74 and 677,026.50 is: 934,298.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,986.21 : 1,724,983.74 = 677,026.50 : x
  2. Step 2: Convert to fraction form
    1,249,986.21/1,724,983.74 = 677,026.50/x
  3. Step 3: Cross multiply
    1,249,986.21x = 1,724,983.74 × 677,026.50
  4. Step 4: Simplify right side
    1,249,986.21x = 1,167,859,704,049.11
  5. Step 5: Solve for x
    x = 1,167,859,704,049.11/1,249,986.21
  6. Step 6: Final answer
    x = 934,298.07

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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.