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Finding the Fourth Proportional to 647,570.35, 893,653.59 and 357,194.32

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Solution

The fourth proportional to 647,570.35, 893,653.59 and 357,194.32 is: 492,931.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,570.35 : 893,653.59 = 357,194.32 : x
  2. Step 2: Convert to fraction form
    647,570.35/893,653.59 = 357,194.32/x
  3. Step 3: Cross multiply
    647,570.35x = 893,653.59 × 357,194.32
  4. Step 4: Simplify right side
    647,570.35x = 319,207,990,527.76
  5. Step 5: Solve for x
    x = 319,207,990,527.76/647,570.35
  6. Step 6: Final answer
    x = 492,931.76

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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.