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Finding the Fourth Proportional to 459,593.40, 689,951.70 and 260,052.60

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Solution

The fourth proportional to 459,593.40, 689,951.70 and 260,052.60 is: 390,396.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,593.40 : 689,951.70 = 260,052.60 : x
  2. Step 2: Convert to fraction form
    459,593.40/689,951.70 = 260,052.60/x
  3. Step 3: Cross multiply
    459,593.40x = 689,951.70 × 260,052.60
  4. Step 4: Simplify right side
    459,593.40x = 179,423,733,459.42
  5. Step 5: Solve for x
    x = 179,423,733,459.42/459,593.40
  6. Step 6: Final answer
    x = 390,396.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.