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Finding the Fourth Proportional to 317,756.76, 438,543.24 and 183,620.76

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Solution

The fourth proportional to 317,756.76, 438,543.24 and 183,620.76 is: 253,419.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,756.76 : 438,543.24 = 183,620.76 : x
  2. Step 2: Convert to fraction form
    317,756.76/438,543.24 = 183,620.76/x
  3. Step 3: Cross multiply
    317,756.76x = 438,543.24 × 183,620.76
  4. Step 4: Simplify right side
    317,756.76x = 80,525,643,021.66
  5. Step 5: Solve for x
    x = 80,525,643,021.66/317,756.76
  6. Step 6: Final answer
    x = 253,419.13

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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.