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Finding the Fourth Proportional to 334,875.60, 501,438.60 and 319,129.20

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Solution

The fourth proportional to 334,875.60, 501,438.60 and 319,129.20 is: 477,860.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,875.60 : 501,438.60 = 319,129.20 : x
  2. Step 2: Convert to fraction form
    334,875.60/501,438.60 = 319,129.20/x
  3. Step 3: Cross multiply
    334,875.60x = 501,438.60 × 319,129.20
  4. Step 4: Simplify right side
    334,875.60x = 160,023,699,267.12
  5. Step 5: Solve for x
    x = 160,023,699,267.12/334,875.60
  6. Step 6: Final answer
    x = 477,860.13

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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.