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Finding the Fourth Proportional to 705,928.90, 974,219.22 and 400,064.80

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Solution

The fourth proportional to 705,928.90, 974,219.22 and 400,064.80 is: 552,110.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,928.90 : 974,219.22 = 400,064.80 : x
  2. Step 2: Convert to fraction form
    705,928.90/974,219.22 = 400,064.80/x
  3. Step 3: Cross multiply
    705,928.90x = 974,219.22 × 400,064.80
  4. Step 4: Simplify right side
    705,928.90x = 389,750,817,405.46
  5. Step 5: Solve for x
    x = 389,750,817,405.46/705,928.90
  6. Step 6: Final answer
    x = 552,110.58

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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.