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Finding the Fourth Proportional to 543,684.30, 815,526.45 and 403,716.30

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Solution

The fourth proportional to 543,684.30, 815,526.45 and 403,716.30 is: 605,574.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,684.30 : 815,526.45 = 403,716.30 : x
  2. Step 2: Convert to fraction form
    543,684.30/815,526.45 = 403,716.30/x
  3. Step 3: Cross multiply
    543,684.30x = 815,526.45 × 403,716.30
  4. Step 4: Simplify right side
    543,684.30x = 329,241,320,946.14
  5. Step 5: Solve for x
    x = 329,241,320,946.14/543,684.30
  6. Step 6: Final answer
    x = 605,574.45

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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.