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Finding the Fourth Proportional to 539,218.40, 808,827.60 and 371,256.80

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Solution

The fourth proportional to 539,218.40, 808,827.60 and 371,256.80 is: 556,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,218.40 : 808,827.60 = 371,256.80 : x
  2. Step 2: Convert to fraction form
    539,218.40/808,827.60 = 371,256.80/x
  3. Step 3: Cross multiply
    539,218.40x = 808,827.60 × 371,256.80
  4. Step 4: Simplify right side
    539,218.40x = 300,282,746,527.68
  5. Step 5: Solve for x
    x = 300,282,746,527.68/539,218.40
  6. Step 6: Final answer
    x = 556,885.20

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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.