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Finding the Fourth Proportional to 693,862.60, 957,566.95 and 421,885.46

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Solution

The fourth proportional to 693,862.60, 957,566.95 and 421,885.46 is: 582,224.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,862.60 : 957,566.95 = 421,885.46 : x
  2. Step 2: Convert to fraction form
    693,862.60/957,566.95 = 421,885.46/x
  3. Step 3: Cross multiply
    693,862.60x = 957,566.95 × 421,885.46
  4. Step 4: Simplify right side
    693,862.60x = 403,983,566,284.29
  5. Step 5: Solve for x
    x = 403,983,566,284.29/693,862.60
  6. Step 6: Final answer
    x = 582,224.16

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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.