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Finding the Fourth Proportional to 590,461.60, 885,692.40 and 290,999.20

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Solution

The fourth proportional to 590,461.60, 885,692.40 and 290,999.20 is: 436,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,461.60 : 885,692.40 = 290,999.20 : x
  2. Step 2: Convert to fraction form
    590,461.60/885,692.40 = 290,999.20/x
  3. Step 3: Cross multiply
    590,461.60x = 885,692.40 × 290,999.20
  4. Step 4: Simplify right side
    590,461.60x = 257,735,779,846.08
  5. Step 5: Solve for x
    x = 257,735,779,846.08/590,461.60
  6. Step 6: Final answer
    x = 436,498.80

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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.