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Finding the Fourth Proportional to 401,901.21, 554,603.63 and 232,125.21

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Solution

The fourth proportional to 401,901.21, 554,603.63 and 232,125.21 is: 320,321.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,901.21 : 554,603.63 = 232,125.21 : x
  2. Step 2: Convert to fraction form
    401,901.21/554,603.63 = 232,125.21/x
  3. Step 3: Cross multiply
    401,901.21x = 554,603.63 × 232,125.21
  4. Step 4: Simplify right side
    401,901.21x = 128,737,482,919.89
  5. Step 5: Solve for x
    x = 128,737,482,919.89/401,901.21
  6. Step 6: Final answer
    x = 320,321.21

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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.