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Finding the Fourth Proportional to 604,186.15, 906,279.18 and 287,683.51

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Solution

The fourth proportional to 604,186.15, 906,279.18 and 287,683.51 is: 431,525.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,186.15 : 906,279.18 = 287,683.51 : x
  2. Step 2: Convert to fraction form
    604,186.15/906,279.18 = 287,683.51/x
  3. Step 3: Cross multiply
    604,186.15x = 906,279.18 × 287,683.51
  4. Step 4: Simplify right side
    604,186.15x = 260,721,575,542.32
  5. Step 5: Solve for x
    x = 260,721,575,542.32/604,186.15
  6. Step 6: Final answer
    x = 431,525.24

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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.