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Finding the Fourth Proportional to 525,515.77, 725,211.71 and 283,798.31

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Solution

The fourth proportional to 525,515.77, 725,211.71 and 283,798.31 is: 391,641.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,515.77 : 725,211.71 = 283,798.31 : x
  2. Step 2: Convert to fraction form
    525,515.77/725,211.71 = 283,798.31/x
  3. Step 3: Cross multiply
    525,515.77x = 725,211.71 × 283,798.31
  4. Step 4: Simplify right side
    525,515.77x = 205,813,857,690.21
  5. Step 5: Solve for x
    x = 205,813,857,690.21/525,515.77
  6. Step 6: Final answer
    x = 391,641.64

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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.