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Finding the Fourth Proportional to 665,613.40, 918,546.30 and 363,807.40

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Solution

The fourth proportional to 665,613.40, 918,546.30 and 363,807.40 is: 502,054.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,613.40 : 918,546.30 = 363,807.40 : x
  2. Step 2: Convert to fraction form
    665,613.40/918,546.30 = 363,807.40/x
  3. Step 3: Cross multiply
    665,613.40x = 918,546.30 × 363,807.40
  4. Step 4: Simplify right side
    665,613.40x = 334,173,941,182.62
  5. Step 5: Solve for x
    x = 334,173,941,182.62/665,613.40
  6. Step 6: Final answer
    x = 502,054.11

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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.