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Finding the Fourth Proportional to 539,117.40, 808,676.10 and 165,140.40

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Solution

The fourth proportional to 539,117.40, 808,676.10 and 165,140.40 is: 247,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,117.40 : 808,676.10 = 165,140.40 : x
  2. Step 2: Convert to fraction form
    539,117.40/808,676.10 = 165,140.40/x
  3. Step 3: Cross multiply
    539,117.40x = 808,676.10 × 165,140.40
  4. Step 4: Simplify right side
    539,117.40x = 133,545,094,624.44
  5. Step 5: Solve for x
    x = 133,545,094,624.44/539,117.40
  6. Step 6: Final answer
    x = 247,710.60

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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.