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Finding the Fourth Proportional to 619,510.38, 855,224.64 and 415,486.77

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Solution

The fourth proportional to 619,510.38, 855,224.64 and 415,486.77 is: 573,573.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,510.38 : 855,224.64 = 415,486.77 : x
  2. Step 2: Convert to fraction form
    619,510.38/855,224.64 = 415,486.77/x
  3. Step 3: Cross multiply
    619,510.38x = 855,224.64 × 415,486.77
  4. Step 4: Simplify right side
    619,510.38x = 355,334,523,298.01
  5. Step 5: Solve for x
    x = 355,334,523,298.01/619,510.38
  6. Step 6: Final answer
    x = 573,573.16

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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.