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Finding the Fourth Proportional to 626,870.70, 865,450.74 and 381,947.82

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Solution

The fourth proportional to 626,870.70, 865,450.74 and 381,947.82 is: 527,312.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,870.70 : 865,450.74 = 381,947.82 : x
  2. Step 2: Convert to fraction form
    626,870.70/865,450.74 = 381,947.82/x
  3. Step 3: Cross multiply
    626,870.70x = 865,450.74 × 381,947.82
  4. Step 4: Simplify right side
    626,870.70x = 330,557,023,460.39
  5. Step 5: Solve for x
    x = 330,557,023,460.39/626,870.70
  6. Step 6: Final answer
    x = 527,312.93

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1.5x scale

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.