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Finding the Fourth Proportional to 374,075.40, 561,113.10 and 307,590.60

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Solution

The fourth proportional to 374,075.40, 561,113.10 and 307,590.60 is: 461,385.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,075.40 : 561,113.10 = 307,590.60 : x
  2. Step 2: Convert to fraction form
    374,075.40/561,113.10 = 307,590.60/x
  3. Step 3: Cross multiply
    374,075.40x = 561,113.10 × 307,590.60
  4. Step 4: Simplify right side
    374,075.40x = 172,593,115,096.86
  5. Step 5: Solve for x
    x = 172,593,115,096.86/374,075.40
  6. Step 6: Final answer
    x = 461,385.90

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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.