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Finding the Fourth Proportional to 401,527.53, 554,363.19 and 358,431.48

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Solution

The fourth proportional to 401,527.53, 554,363.19 and 358,431.48 is: 494,863.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,527.53 : 554,363.19 = 358,431.48 : x
  2. Step 2: Convert to fraction form
    401,527.53/554,363.19 = 358,431.48/x
  3. Step 3: Cross multiply
    401,527.53x = 554,363.19 × 358,431.48
  4. Step 4: Simplify right side
    401,527.53x = 198,701,218,649.22
  5. Step 5: Solve for x
    x = 198,701,218,649.22/401,527.53
  6. Step 6: Final answer
    x = 494,863.25

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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.