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Finding the Fourth Proportional to 423,685.22, 584,441.53 and 253,820.93

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Solution

The fourth proportional to 423,685.22, 584,441.53 and 253,820.93 is: 350,126.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,685.22 : 584,441.53 = 253,820.93 : x
  2. Step 2: Convert to fraction form
    423,685.22/584,441.53 = 253,820.93/x
  3. Step 3: Cross multiply
    423,685.22x = 584,441.53 × 253,820.93
  4. Step 4: Simplify right side
    423,685.22x = 148,343,489,118.46
  5. Step 5: Solve for x
    x = 148,343,489,118.46/423,685.22
  6. Step 6: Final answer
    x = 350,126.66

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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.