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Finding the Fourth Proportional to 620,859.60, 931,289.40 and 573,620.40

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Solution

The fourth proportional to 620,859.60, 931,289.40 and 573,620.40 is: 860,430.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,859.60 : 931,289.40 = 573,620.40 : x
  2. Step 2: Convert to fraction form
    620,859.60/931,289.40 = 573,620.40/x
  3. Step 3: Cross multiply
    620,859.60x = 931,289.40 × 573,620.40
  4. Step 4: Simplify right side
    620,859.60x = 534,206,598,143.76
  5. Step 5: Solve for x
    x = 534,206,598,143.76/620,859.60
  6. Step 6: Final answer
    x = 860,430.60

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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.