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Finding the Fourth Proportional to 619,823.88, 855,320.88 and 347,866.32

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Solution

The fourth proportional to 619,823.88, 855,320.88 and 347,866.32 is: 480,035.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,823.88 : 855,320.88 = 347,866.32 : x
  2. Step 2: Convert to fraction form
    619,823.88/855,320.88 = 347,866.32/x
  3. Step 3: Cross multiply
    619,823.88x = 855,320.88 × 347,866.32
  4. Step 4: Simplify right side
    619,823.88x = 297,537,326,944.76
  5. Step 5: Solve for x
    x = 297,537,326,944.76/619,823.88
  6. Step 6: Final answer
    x = 480,035.28

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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.