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Finding the Fourth Proportional to 543,313.30, 814,969.95 and 403,345.30

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Solution

The fourth proportional to 543,313.30, 814,969.95 and 403,345.30 is: 605,017.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,313.30 : 814,969.95 = 403,345.30 : x
  2. Step 2: Convert to fraction form
    543,313.30/814,969.95 = 403,345.30/x
  3. Step 3: Cross multiply
    543,313.30x = 814,969.95 × 403,345.30
  4. Step 4: Simplify right side
    543,313.30x = 328,714,298,973.74
  5. Step 5: Solve for x
    x = 328,714,298,973.74/543,313.30
  6. Step 6: Final answer
    x = 605,017.95

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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.