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Finding the Fourth Proportional to 696,009.94, 960,573.39 and 390,168.92

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Solution

The fourth proportional to 696,009.94, 960,573.39 and 390,168.92 is: 538,477.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,009.94 : 960,573.39 = 390,168.92 : x
  2. Step 2: Convert to fraction form
    696,009.94/960,573.39 = 390,168.92/x
  3. Step 3: Cross multiply
    696,009.94x = 960,573.39 × 390,168.92
  4. Step 4: Simplify right side
    696,009.94x = 374,785,882,157.04
  5. Step 5: Solve for x
    x = 374,785,882,157.04/696,009.94
  6. Step 6: Final answer
    x = 538,477.77

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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.