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Finding the Fourth Proportional to 619,657.24, 853,533.84 and 438,056.88

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Solution

The fourth proportional to 619,657.24, 853,533.84 and 438,056.88 is: 603,392.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,657.24 : 853,533.84 = 438,056.88 : x
  2. Step 2: Convert to fraction form
    619,657.24/853,533.84 = 438,056.88/x
  3. Step 3: Cross multiply
    619,657.24x = 853,533.84 × 438,056.88
  4. Step 4: Simplify right side
    619,657.24x = 373,896,370,924.82
  5. Step 5: Solve for x
    x = 373,896,370,924.82/619,657.24
  6. Step 6: Final answer
    x = 603,392.24

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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.