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Finding the Fourth Proportional to 657,457.46, 986,181.01 and 353,993.79

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Solution

The fourth proportional to 657,457.46, 986,181.01 and 353,993.79 is: 530,987.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,457.46 : 986,181.01 = 353,993.79 : x
  2. Step 2: Convert to fraction form
    657,457.46/986,181.01 = 353,993.79/x
  3. Step 3: Cross multiply
    657,457.46x = 986,181.01 × 353,993.79
  4. Step 4: Simplify right side
    657,457.46x = 349,101,956,169.12
  5. Step 5: Solve for x
    x = 349,101,956,169.12/657,457.46
  6. Step 6: Final answer
    x = 530,987.90

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Half scale
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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.