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Finding the Fourth Proportional to 611,664.30, 917,496.45 and 582,139.80

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Solution

The fourth proportional to 611,664.30, 917,496.45 and 582,139.80 is: 873,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,664.30 : 917,496.45 = 582,139.80 : x
  2. Step 2: Convert to fraction form
    611,664.30/917,496.45 = 582,139.80/x
  3. Step 3: Cross multiply
    611,664.30x = 917,496.45 × 582,139.80
  4. Step 4: Simplify right side
    611,664.30x = 534,111,199,903.71
  5. Step 5: Solve for x
    x = 534,111,199,903.71/611,664.30
  6. Step 6: Final answer
    x = 873,209.70

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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.