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Finding the Fourth Proportional to 684,095.57, 944,006.75 and 393,660.20

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Solution

The fourth proportional to 684,095.57, 944,006.75 and 393,660.20 is: 543,225.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,095.57 : 944,006.75 = 393,660.20 : x
  2. Step 2: Convert to fraction form
    684,095.57/944,006.75 = 393,660.20/x
  3. Step 3: Cross multiply
    684,095.57x = 944,006.75 × 393,660.20
  4. Step 4: Simplify right side
    684,095.57x = 371,617,890,088.63
  5. Step 5: Solve for x
    x = 371,617,890,088.63/684,095.57
  6. Step 6: Final answer
    x = 543,225.10

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Half scale
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Double scale
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Similar ratio
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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.