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Finding the Fourth Proportional to 693,354.88, 957,124.43 and 421,509.61

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Solution

The fourth proportional to 693,354.88, 957,124.43 and 421,509.61 is: 581,862.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,354.88 : 957,124.43 = 421,509.61 : x
  2. Step 2: Convert to fraction form
    693,354.88/957,124.43 = 421,509.61/x
  3. Step 3: Cross multiply
    693,354.88x = 957,124.43 × 421,509.61
  4. Step 4: Simplify right side
    693,354.88x = 403,437,145,210.77
  5. Step 5: Solve for x
    x = 403,437,145,210.77/693,354.88
  6. Step 6: Final answer
    x = 581,862.42

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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.