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Finding the Fourth Proportional to 344,312.60, 516,468.90 and 289,200.20

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Solution

The fourth proportional to 344,312.60, 516,468.90 and 289,200.20 is: 433,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,312.60 : 516,468.90 = 289,200.20 : x
  2. Step 2: Convert to fraction form
    344,312.60/516,468.90 = 289,200.20/x
  3. Step 3: Cross multiply
    344,312.60x = 516,468.90 × 289,200.20
  4. Step 4: Simplify right side
    344,312.60x = 149,362,909,173.78
  5. Step 5: Solve for x
    x = 149,362,909,173.78/344,312.60
  6. Step 6: Final answer
    x = 433,800.30

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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.