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Finding the Fourth Proportional to 621,809.60, 932,714.40 and 611,441.60

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Solution

The fourth proportional to 621,809.60, 932,714.40 and 611,441.60 is: 917,162.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,809.60 : 932,714.40 = 611,441.60 : x
  2. Step 2: Convert to fraction form
    621,809.60/932,714.40 = 611,441.60/x
  3. Step 3: Cross multiply
    621,809.60x = 932,714.40 × 611,441.60
  4. Step 4: Simplify right side
    621,809.60x = 570,300,385,079.04
  5. Step 5: Solve for x
    x = 570,300,385,079.04/621,809.60
  6. Step 6: Final answer
    x = 917,162.40

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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.