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Finding the Fourth Proportional to 564,929.75, 779,413.36 and 319,881.01

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Solution

The fourth proportional to 564,929.75, 779,413.36 and 319,881.01 is: 441,328.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,929.75 : 779,413.36 = 319,881.01 : x
  2. Step 2: Convert to fraction form
    564,929.75/779,413.36 = 319,881.01/x
  3. Step 3: Cross multiply
    564,929.75x = 779,413.36 × 319,881.01
  4. Step 4: Simplify right side
    564,929.75x = 249,319,532,717.01
  5. Step 5: Solve for x
    x = 249,319,532,717.01/564,929.75
  6. Step 6: Final answer
    x = 441,328.39

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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.