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Finding the Fourth Proportional to 455,223.57, 628,168.71 and 291,591.33

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Solution

The fourth proportional to 455,223.57, 628,168.71 and 291,591.33 is: 402,370.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,223.57 : 628,168.71 = 291,591.33 : x
  2. Step 2: Convert to fraction form
    455,223.57/628,168.71 = 291,591.33/x
  3. Step 3: Cross multiply
    455,223.57x = 628,168.71 × 291,591.33
  4. Step 4: Simplify right side
    455,223.57x = 183,168,549,613.28
  5. Step 5: Solve for x
    x = 183,168,549,613.28/455,223.57
  6. Step 6: Final answer
    x = 402,370.53

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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.