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Finding the Fourth Proportional to 955,398.64, 1,318,481.88 and 525,710.32

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Solution

The fourth proportional to 955,398.64, 1,318,481.88 and 525,710.32 is: 725,497.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    955,398.64 : 1,318,481.88 = 525,710.32 : x
  2. Step 2: Convert to fraction form
    955,398.64/1,318,481.88 = 525,710.32/x
  3. Step 3: Cross multiply
    955,398.64x = 1,318,481.88 × 525,710.32
  4. Step 4: Simplify right side
    955,398.64x = 693,139,531,049.00
  5. Step 5: Solve for x
    x = 693,139,531,049.00/955,398.64
  6. Step 6: Final answer
    x = 725,497.72

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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.