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Finding the Fourth Proportional to 647,608.77, 893,700.95 and 357,213.80

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Solution

The fourth proportional to 647,608.77, 893,700.95 and 357,213.80 is: 492,955.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,608.77 : 893,700.95 = 357,213.80 : x
  2. Step 2: Convert to fraction form
    647,608.77/893,700.95 = 357,213.80/x
  3. Step 3: Cross multiply
    647,608.77x = 893,700.95 × 357,213.80
  4. Step 4: Simplify right side
    647,608.77x = 319,242,312,861.29
  5. Step 5: Solve for x
    x = 319,242,312,861.29/647,608.77
  6. Step 6: Final answer
    x = 492,955.51

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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.