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Finding the Fourth Proportional to 451,417.08, 623,000.12 and 257,853.71

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Solution

The fourth proportional to 451,417.08, 623,000.12 and 257,853.71 is: 355,863.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,417.08 : 623,000.12 = 257,853.71 : x
  2. Step 2: Convert to fraction form
    451,417.08/623,000.12 = 257,853.71/x
  3. Step 3: Cross multiply
    451,417.08x = 623,000.12 × 257,853.71
  4. Step 4: Simplify right side
    451,417.08x = 160,642,892,272.45
  5. Step 5: Solve for x
    x = 160,642,892,272.45/451,417.08
  6. Step 6: Final answer
    x = 355,863.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.