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Finding the Fourth Proportional to 666,296.89, 919,486.96 and 360,373.60

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Solution

The fourth proportional to 666,296.89, 919,486.96 and 360,373.60 is: 497,314.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,296.89 : 919,486.96 = 360,373.60 : x
  2. Step 2: Convert to fraction form
    666,296.89/919,486.96 = 360,373.60/x
  3. Step 3: Cross multiply
    666,296.89x = 919,486.96 × 360,373.60
  4. Step 4: Simplify right side
    666,296.89x = 331,358,825,928.26
  5. Step 5: Solve for x
    x = 331,358,825,928.26/666,296.89
  6. Step 6: Final answer
    x = 497,314.08

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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.