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Finding the Fourth Proportional to 630,616.92, 868,772.70 and 439,284.12

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Solution

The fourth proportional to 630,616.92, 868,772.70 and 439,284.12 is: 605,182.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,616.92 : 868,772.70 = 439,284.12 : x
  2. Step 2: Convert to fraction form
    630,616.92/868,772.70 = 439,284.12/x
  3. Step 3: Cross multiply
    630,616.92x = 868,772.70 × 439,284.12
  4. Step 4: Simplify right side
    630,616.92x = 381,638,050,999.52
  5. Step 5: Solve for x
    x = 381,638,050,999.52/630,616.92
  6. Step 6: Final answer
    x = 605,182.07

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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.