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Finding the Fourth Proportional to 392,017.51, 540,411.55 and 277,093.40

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Solution

The fourth proportional to 392,017.51, 540,411.55 and 277,093.40 is: 381,984.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,017.51 : 540,411.55 = 277,093.40 : x
  2. Step 2: Convert to fraction form
    392,017.51/540,411.55 = 277,093.40/x
  3. Step 3: Cross multiply
    392,017.51x = 540,411.55 × 277,093.40
  4. Step 4: Simplify right side
    392,017.51x = 149,744,473,788.77
  5. Step 5: Solve for x
    x = 149,744,473,788.77/392,017.51
  6. Step 6: Final answer
    x = 381,984.15

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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.