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Finding the Fourth Proportional to 261,573.63, 392,364.15 and 74,585.13

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Solution

The fourth proportional to 261,573.63, 392,364.15 and 74,585.13 is: 111,878.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,573.63 : 392,364.15 = 74,585.13 : x
  2. Step 2: Convert to fraction form
    261,573.63/392,364.15 = 74,585.13/x
  3. Step 3: Cross multiply
    261,573.63x = 392,364.15 × 74,585.13
  4. Step 4: Simplify right side
    261,573.63x = 29,264,529,173.27
  5. Step 5: Solve for x
    x = 29,264,529,173.27/261,573.63
  6. Step 6: Final answer
    x = 111,878.75

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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.