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Finding the Fourth Proportional to 543,519.65, 811,619.53 and 443,877.65

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Solution

The fourth proportional to 543,519.65, 811,619.53 and 443,877.65 is: 662,827.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,519.65 : 811,619.53 = 443,877.65 : x
  2. Step 2: Convert to fraction form
    543,519.65/811,619.53 = 443,877.65/x
  3. Step 3: Cross multiply
    543,519.65x = 811,619.53 × 443,877.65
  4. Step 4: Simplify right side
    543,519.65x = 360,259,769,670.51
  5. Step 5: Solve for x
    x = 360,259,769,670.51/543,519.65
  6. Step 6: Final answer
    x = 662,827.50

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.