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Finding the Fourth Proportional to 423,056.40, 583,656.84 and 270,100.40

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Solution

The fourth proportional to 423,056.40, 583,656.84 and 270,100.40 is: 372,635.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,056.40 : 583,656.84 = 270,100.40 : x
  2. Step 2: Convert to fraction form
    423,056.40/583,656.84 = 270,100.40/x
  3. Step 3: Cross multiply
    423,056.40x = 583,656.84 × 270,100.40
  4. Step 4: Simplify right side
    423,056.40x = 157,645,945,946.74
  5. Step 5: Solve for x
    x = 157,645,945,946.74/423,056.40
  6. Step 6: Final answer
    x = 372,635.77

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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.