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Finding the Fourth Proportional to 647,561.93, 893,613.33 and 357,185.03

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Solution

The fourth proportional to 647,561.93, 893,613.33 and 357,185.03 is: 492,903.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,561.93 : 893,613.33 = 357,185.03 : x
  2. Step 2: Convert to fraction form
    647,561.93/893,613.33 = 357,185.03/x
  3. Step 3: Cross multiply
    647,561.93x = 893,613.33 × 357,185.03
  4. Step 4: Simplify right side
    647,561.93x = 319,185,299,616.38
  5. Step 5: Solve for x
    x = 319,185,299,616.38/647,561.93
  6. Step 6: Final answer
    x = 492,903.13

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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.