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Finding the Fourth Proportional to 539,341.10, 744,438.76 and 313,059.50

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Solution

The fourth proportional to 539,341.10, 744,438.76 and 313,059.50 is: 432,108.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,341.10 : 744,438.76 = 313,059.50 : x
  2. Step 2: Convert to fraction form
    539,341.10/744,438.76 = 313,059.50/x
  3. Step 3: Cross multiply
    539,341.10x = 744,438.76 × 313,059.50
  4. Step 4: Simplify right side
    539,341.10x = 233,053,625,986.22
  5. Step 5: Solve for x
    x = 233,053,625,986.22/539,341.10
  6. Step 6: Final answer
    x = 432,108.04

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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.