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Finding the Fourth Proportional to 613,329.30, 919,009.80 and 577,899.90

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Solution

The fourth proportional to 613,329.30, 919,009.80 and 577,899.90 is: 865,922.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,329.30 : 919,009.80 = 577,899.90 : x
  2. Step 2: Convert to fraction form
    613,329.30/919,009.80 = 577,899.90/x
  3. Step 3: Cross multiply
    613,329.30x = 919,009.80 × 577,899.90
  4. Step 4: Simplify right side
    613,329.30x = 531,095,671,519.02
  5. Step 5: Solve for x
    x = 531,095,671,519.02/613,329.30
  6. Step 6: Final answer
    x = 865,922.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.