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Finding the Fourth Proportional to 517,256.40, 713,806.98 and 290,901.90

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Solution

The fourth proportional to 517,256.40, 713,806.98 and 290,901.90 is: 401,440.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,256.40 : 713,806.98 = 290,901.90 : x
  2. Step 2: Convert to fraction form
    517,256.40/713,806.98 = 290,901.90/x
  3. Step 3: Cross multiply
    517,256.40x = 713,806.98 × 290,901.90
  4. Step 4: Simplify right side
    517,256.40x = 207,647,806,715.26
  5. Step 5: Solve for x
    x = 207,647,806,715.26/517,256.40
  6. Step 6: Final answer
    x = 401,440.77

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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.