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Finding the Fourth Proportional to 623,590.39, 860,692.48 and 405,419.37

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Solution

The fourth proportional to 623,590.39, 860,692.48 and 405,419.37 is: 559,568.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,590.39 : 860,692.48 = 405,419.37 : x
  2. Step 2: Convert to fraction form
    623,590.39/860,692.48 = 405,419.37/x
  3. Step 3: Cross multiply
    623,590.39x = 860,692.48 × 405,419.37
  4. Step 4: Simplify right side
    623,590.39x = 348,941,403,005.34
  5. Step 5: Solve for x
    x = 348,941,403,005.34/623,590.39
  6. Step 6: Final answer
    x = 559,568.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.