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Finding the Fourth Proportional to 885,259.60, 1,328,321.40 and 411,701.20

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Solution

The fourth proportional to 885,259.60, 1,328,321.40 and 411,701.20 is: 617,752.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,259.60 : 1,328,321.40 = 411,701.20 : x
  2. Step 2: Convert to fraction form
    885,259.60/1,328,321.40 = 411,701.20/x
  3. Step 3: Cross multiply
    885,259.60x = 1,328,321.40 × 411,701.20
  4. Step 4: Simplify right side
    885,259.60x = 546,871,514,365.68
  5. Step 5: Solve for x
    x = 546,871,514,365.68/885,259.60
  6. Step 6: Final answer
    x = 617,752.71

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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.