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Finding the Fourth Proportional to 685,894.92, 946,863.18 and 456,833.40

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Solution

The fourth proportional to 685,894.92, 946,863.18 and 456,833.40 is: 630,648.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,894.92 : 946,863.18 = 456,833.40 : x
  2. Step 2: Convert to fraction form
    685,894.92/946,863.18 = 456,833.40/x
  3. Step 3: Cross multiply
    685,894.92x = 946,863.18 × 456,833.40
  4. Step 4: Simplify right side
    685,894.92x = 432,558,725,854.21
  5. Step 5: Solve for x
    x = 432,558,725,854.21/685,894.92
  6. Step 6: Final answer
    x = 630,648.68

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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.