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Finding the Fourth Proportional to 620,690.80, 931,036.20 and 591,822.40

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Solution

The fourth proportional to 620,690.80, 931,036.20 and 591,822.40 is: 887,733.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,690.80 : 931,036.20 = 591,822.40 : x
  2. Step 2: Convert to fraction form
    620,690.80/931,036.20 = 591,822.40/x
  3. Step 3: Cross multiply
    620,690.80x = 931,036.20 × 591,822.40
  4. Step 4: Simplify right side
    620,690.80x = 551,008,078,370.88
  5. Step 5: Solve for x
    x = 551,008,078,370.88/620,690.80
  6. Step 6: Final answer
    x = 887,733.60

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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.