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Finding the Fourth Proportional to 693,835.92, 957,541.92 and 387,971.84

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Solution

The fourth proportional to 693,835.92, 957,541.92 and 387,971.84 is: 535,428.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,835.92 : 957,541.92 = 387,971.84 : x
  2. Step 2: Convert to fraction form
    693,835.92/957,541.92 = 387,971.84/x
  3. Step 3: Cross multiply
    693,835.92x = 957,541.92 × 387,971.84
  4. Step 4: Simplify right side
    693,835.92x = 371,499,300,579.53
  5. Step 5: Solve for x
    x = 371,499,300,579.53/693,835.92
  6. Step 6: Final answer
    x = 535,428.18

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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.