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Finding the Fourth Proportional to 539,143.80, 808,715.70 and 184,126.20

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Solution

The fourth proportional to 539,143.80, 808,715.70 and 184,126.20 is: 276,189.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,143.80 : 808,715.70 = 184,126.20 : x
  2. Step 2: Convert to fraction form
    539,143.80/808,715.70 = 184,126.20/x
  3. Step 3: Cross multiply
    539,143.80x = 808,715.70 × 184,126.20
  4. Step 4: Simplify right side
    539,143.80x = 148,905,748,721.34
  5. Step 5: Solve for x
    x = 148,905,748,721.34/539,143.80
  6. Step 6: Final answer
    x = 276,189.30

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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.