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Finding the Fourth Proportional to 407,774.88, 611,662.35 and 127,316.16

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Solution

The fourth proportional to 407,774.88, 611,662.35 and 127,316.16 is: 190,974.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,774.88 : 611,662.35 = 127,316.16 : x
  2. Step 2: Convert to fraction form
    407,774.88/611,662.35 = 127,316.16/x
  3. Step 3: Cross multiply
    407,774.88x = 611,662.35 × 127,316.16
  4. Step 4: Simplify right side
    407,774.88x = 77,874,501,618.58
  5. Step 5: Solve for x
    x = 77,874,501,618.58/407,774.88
  6. Step 6: Final answer
    x = 190,974.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.