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Finding the Fourth Proportional to 289,339.17, 399,223.53 and 174,636.69

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Solution

The fourth proportional to 289,339.17, 399,223.53 and 174,636.69 is: 240,959.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,339.17 : 399,223.53 = 174,636.69 : x
  2. Step 2: Convert to fraction form
    289,339.17/399,223.53 = 174,636.69/x
  3. Step 3: Cross multiply
    289,339.17x = 399,223.53 × 174,636.69
  4. Step 4: Simplify right side
    289,339.17x = 69,719,075,849.32
  5. Step 5: Solve for x
    x = 69,719,075,849.32/289,339.17
  6. Step 6: Final answer
    x = 240,959.69

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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.