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Finding the Fourth Proportional to 692,956.40, 972,005.20 and 692,956.40

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Solution

The fourth proportional to 692,956.40, 972,005.20 and 692,956.40 is: 972,005.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,956.40 : 972,005.20 = 692,956.40 : x
  2. Step 2: Convert to fraction form
    692,956.40/972,005.20 = 692,956.40/x
  3. Step 3: Cross multiply
    692,956.40x = 972,005.20 × 692,956.40
  4. Step 4: Simplify right side
    692,956.40x = 673,557,224,173.28
  5. Step 5: Solve for x
    x = 673,557,224,173.28/692,956.40
  6. Step 6: Final answer
    x = 972,005.20

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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 (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.