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Finding the Fourth Proportional to 423,907.64, 584,990.88 and 242,618.84

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Solution

The fourth proportional to 423,907.64, 584,990.88 and 242,618.84 is: 334,813.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,907.64 : 584,990.88 = 242,618.84 : x
  2. Step 2: Convert to fraction form
    423,907.64/584,990.88 = 242,618.84/x
  3. Step 3: Cross multiply
    423,907.64x = 584,990.88 × 242,618.84
  4. Step 4: Simplify right side
    423,907.64x = 141,929,808,716.18
  5. Step 5: Solve for x
    x = 141,929,808,716.18/423,907.64
  6. Step 6: Final answer
    x = 334,813.05

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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.