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Finding the Fourth Proportional to 522,673.40, 784,010.10 and 417,697.40

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Solution

The fourth proportional to 522,673.40, 784,010.10 and 417,697.40 is: 626,546.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,673.40 : 784,010.10 = 417,697.40 : x
  2. Step 2: Convert to fraction form
    522,673.40/784,010.10 = 417,697.40/x
  3. Step 3: Cross multiply
    522,673.40x = 784,010.10 × 417,697.40
  4. Step 4: Simplify right side
    522,673.40x = 327,478,980,343.74
  5. Step 5: Solve for x
    x = 327,478,980,343.74/522,673.40
  6. Step 6: Final answer
    x = 626,546.10

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