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Finding the Fourth Proportional to 626,545.30, 864,633.50 and 340,065.51

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Solution

The fourth proportional to 626,545.30, 864,633.50 and 340,065.51 is: 469,290.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,545.30 : 864,633.50 = 340,065.51 : x
  2. Step 2: Convert to fraction form
    626,545.30/864,633.50 = 340,065.51/x
  3. Step 3: Cross multiply
    626,545.30x = 864,633.50 × 340,065.51
  4. Step 4: Simplify right side
    626,545.30x = 294,032,032,140.59
  5. Step 5: Solve for x
    x = 294,032,032,140.59/626,545.30
  6. Step 6: Final answer
    x = 469,290.94

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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.