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Finding the Fourth Proportional to 640,054.56, 883,326.96 and 353,599.68

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Solution

The fourth proportional to 640,054.56, 883,326.96 and 353,599.68 is: 487,996.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,054.56 : 883,326.96 = 353,599.68 : x
  2. Step 2: Convert to fraction form
    640,054.56/883,326.96 = 353,599.68/x
  3. Step 3: Cross multiply
    640,054.56x = 883,326.96 × 353,599.68
  4. Step 4: Simplify right side
    640,054.56x = 312,344,130,391.37
  5. Step 5: Solve for x
    x = 312,344,130,391.37/640,054.56
  6. Step 6: Final answer
    x = 487,996.10

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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.