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Finding the Fourth Proportional to 620,616.80, 930,925.20 and 591,748.40

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Solution

The fourth proportional to 620,616.80, 930,925.20 and 591,748.40 is: 887,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,616.80 : 930,925.20 = 591,748.40 : x
  2. Step 2: Convert to fraction form
    620,616.80/930,925.20 = 591,748.40/x
  3. Step 3: Cross multiply
    620,616.80x = 930,925.20 × 591,748.40
  4. Step 4: Simplify right side
    620,616.80x = 550,873,497,619.68
  5. Step 5: Solve for x
    x = 550,873,497,619.68/620,616.80
  6. Step 6: Final answer
    x = 887,622.60

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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.