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Finding the Fourth Proportional to 738,664.48, 1,019,342.64 and 416,368.45

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Solution

The fourth proportional to 738,664.48, 1,019,342.64 and 416,368.45 is: 574,580.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,664.48 : 1,019,342.64 = 416,368.45 : x
  2. Step 2: Convert to fraction form
    738,664.48/1,019,342.64 = 416,368.45/x
  3. Step 3: Cross multiply
    738,664.48x = 1,019,342.64 × 416,368.45
  4. Step 4: Simplify right side
    738,664.48x = 424,422,115,035.71
  5. Step 5: Solve for x
    x = 424,422,115,035.71/738,664.48
  6. Step 6: Final answer
    x = 574,580.38

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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.