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Finding the Fourth Proportional to 607,211.60, 910,817.40 and 186,432.80

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Solution

The fourth proportional to 607,211.60, 910,817.40 and 186,432.80 is: 279,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,211.60 : 910,817.40 = 186,432.80 : x
  2. Step 2: Convert to fraction form
    607,211.60/910,817.40 = 186,432.80/x
  3. Step 3: Cross multiply
    607,211.60x = 910,817.40 × 186,432.80
  4. Step 4: Simplify right side
    607,211.60x = 169,806,238,170.72
  5. Step 5: Solve for x
    x = 169,806,238,170.72/607,211.60
  6. Step 6: Final answer
    x = 279,649.20

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Double scale
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Similar ratio
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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.