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Finding the Fourth Proportional to 638,196.05, 880,710.53 and 351,716.13

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Solution

The fourth proportional to 638,196.05, 880,710.53 and 351,716.13 is: 485,368.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,196.05 : 880,710.53 = 351,716.13 : x
  2. Step 2: Convert to fraction form
    638,196.05/880,710.53 = 351,716.13/x
  3. Step 3: Cross multiply
    638,196.05x = 880,710.53 × 351,716.13
  4. Step 4: Simplify right side
    638,196.05x = 309,760,097,503.27
  5. Step 5: Solve for x
    x = 309,760,097,503.27/638,196.05
  6. Step 6: Final answer
    x = 485,368.24

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.