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Finding the Fourth Proportional to 462,272.30, 690,023.22 and 407,670.30

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Solution

The fourth proportional to 462,272.30, 690,023.22 and 407,670.30 is: 608,520.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,272.30 : 690,023.22 = 407,670.30 : x
  2. Step 2: Convert to fraction form
    462,272.30/690,023.22 = 407,670.30/x
  3. Step 3: Cross multiply
    462,272.30x = 690,023.22 × 407,670.30
  4. Step 4: Simplify right side
    462,272.30x = 281,301,968,988.02
  5. Step 5: Solve for x
    x = 281,301,968,988.02/462,272.30
  6. Step 6: Final answer
    x = 608,520.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.