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Finding the Fourth Proportional to 486,966.40, 730,449.60 and 433,513.60

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Solution

The fourth proportional to 486,966.40, 730,449.60 and 433,513.60 is: 650,270.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,966.40 : 730,449.60 = 433,513.60 : x
  2. Step 2: Convert to fraction form
    486,966.40/730,449.60 = 433,513.60/x
  3. Step 3: Cross multiply
    486,966.40x = 730,449.60 × 433,513.60
  4. Step 4: Simplify right side
    486,966.40x = 316,659,835,714.56
  5. Step 5: Solve for x
    x = 316,659,835,714.56/486,966.40
  6. Step 6: Final answer
    x = 650,270.40

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Half scale
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Double scale
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Similar ratio
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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.