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Finding the Fourth Proportional to 693,596.40, 972,901.20 and 693,596.40

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Solution

The fourth proportional to 693,596.40, 972,901.20 and 693,596.40 is: 972,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,596.40 : 972,901.20 = 693,596.40 : x
  2. Step 2: Convert to fraction form
    693,596.40/972,901.20 = 693,596.40/x
  3. Step 3: Cross multiply
    693,596.40x = 972,901.20 × 693,596.40
  4. Step 4: Simplify right side
    693,596.40x = 674,800,769,875.68
  5. Step 5: Solve for x
    x = 674,800,769,875.68/693,596.40
  6. Step 6: Final answer
    x = 972,901.20

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