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Finding the Fourth Proportional to 606,926.80, 910,390.20 and 291,998.80

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Solution

The fourth proportional to 606,926.80, 910,390.20 and 291,998.80 is: 437,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,926.80 : 910,390.20 = 291,998.80 : x
  2. Step 2: Convert to fraction form
    606,926.80/910,390.20 = 291,998.80/x
  3. Step 3: Cross multiply
    606,926.80x = 910,390.20 × 291,998.80
  4. Step 4: Simplify right side
    606,926.80x = 265,832,845,931.76
  5. Step 5: Solve for x
    x = 265,832,845,931.76/606,926.80
  6. Step 6: Final answer
    x = 437,998.20

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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.