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Finding the Fourth Proportional to 677,608.04, 935,308.48 and 435,890.78

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Solution

The fourth proportional to 677,608.04, 935,308.48 and 435,890.78 is: 601,663.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,608.04 : 935,308.48 = 435,890.78 : x
  2. Step 2: Convert to fraction form
    677,608.04/935,308.48 = 435,890.78/x
  3. Step 3: Cross multiply
    677,608.04x = 935,308.48 × 435,890.78
  4. Step 4: Simplify right side
    677,608.04x = 407,692,342,887.81
  5. Step 5: Solve for x
    x = 407,692,342,887.81/677,608.04
  6. Step 6: Final answer
    x = 601,663.97

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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.