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Finding the Fourth Proportional to 705,521.95, 973,638.40 and 383,250.49

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Solution

The fourth proportional to 705,521.95, 973,638.40 and 383,250.49 is: 528,895.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,521.95 : 973,638.40 = 383,250.49 : x
  2. Step 2: Convert to fraction form
    705,521.95/973,638.40 = 383,250.49/x
  3. Step 3: Cross multiply
    705,521.95x = 973,638.40 × 383,250.49
  4. Step 4: Simplify right side
    705,521.95x = 373,147,390,490.59
  5. Step 5: Solve for x
    x = 373,147,390,490.59/705,521.95
  6. Step 6: Final answer
    x = 528,895.51

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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.