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Finding the Fourth Proportional to 611,572.10, 917,358.15 and 605,667.20

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Solution

The fourth proportional to 611,572.10, 917,358.15 and 605,667.20 is: 908,500.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,572.10 : 917,358.15 = 605,667.20 : x
  2. Step 2: Convert to fraction form
    611,572.10/917,358.15 = 605,667.20/x
  3. Step 3: Cross multiply
    611,572.10x = 917,358.15 × 605,667.20
  4. Step 4: Simplify right side
    611,572.10x = 555,613,742,107.68
  5. Step 5: Solve for x
    x = 555,613,742,107.68/611,572.10
  6. Step 6: Final answer
    x = 908,500.80

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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.