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Finding the Fourth Proportional to 525,886.43, 725,774.31 and 311,095.62

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Solution

The fourth proportional to 525,886.43, 725,774.31 and 311,095.62 is: 429,342.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,886.43 : 725,774.31 = 311,095.62 : x
  2. Step 2: Convert to fraction form
    525,886.43/725,774.31 = 311,095.62/x
  3. Step 3: Cross multiply
    525,886.43x = 725,774.31 × 311,095.62
  4. Step 4: Simplify right side
    525,886.43x = 225,785,208,949.52
  5. Step 5: Solve for x
    x = 225,785,208,949.52/525,886.43
  6. Step 6: Final answer
    x = 429,342.15

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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.