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Finding the Fourth Proportional to 525,641.90, 725,386.11 and 283,924.47

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Solution

The fourth proportional to 525,641.90, 725,386.11 and 283,924.47 is: 391,815.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,641.90 : 725,386.11 = 283,924.47 : x
  2. Step 2: Convert to fraction form
    525,641.90/725,386.11 = 283,924.47/x
  3. Step 3: Cross multiply
    525,641.90x = 725,386.11 × 283,924.47
  4. Step 4: Simplify right side
    525,641.90x = 205,954,866,827.11
  5. Step 5: Solve for x
    x = 205,954,866,827.11/525,641.90
  6. Step 6: Final answer
    x = 391,815.92

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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.