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Finding the Fourth Proportional to 438,040.34, 604,624.94 and 256,791.50

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Solution

The fourth proportional to 438,040.34, 604,624.94 and 256,791.50 is: 354,448.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,040.34 : 604,624.94 = 256,791.50 : x
  2. Step 2: Convert to fraction form
    438,040.34/604,624.94 = 256,791.50/x
  3. Step 3: Cross multiply
    438,040.34x = 604,624.94 × 256,791.50
  4. Step 4: Simplify right side
    438,040.34x = 155,262,545,280.01
  5. Step 5: Solve for x
    x = 155,262,545,280.01/438,040.34
  6. Step 6: Final answer
    x = 354,448.05

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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.