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Finding the Fourth Proportional to 365,309.34, 548,008.29 and 128,603.58

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Solution

The fourth proportional to 365,309.34, 548,008.29 and 128,603.58 is: 192,920.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,309.34 : 548,008.29 = 128,603.58 : x
  2. Step 2: Convert to fraction form
    365,309.34/548,008.29 = 128,603.58/x
  3. Step 3: Cross multiply
    365,309.34x = 548,008.29 × 128,603.58
  4. Step 4: Simplify right side
    365,309.34x = 70,475,827,963.68
  5. Step 5: Solve for x
    x = 70,475,827,963.68/365,309.34
  6. Step 6: Final answer
    x = 192,920.96

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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.