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Finding the Fourth Proportional to 524,279.80, 785,253.30 and 430,967.80

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Solution

The fourth proportional to 524,279.80, 785,253.30 and 430,967.80 is: 645,492.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,279.80 : 785,253.30 = 430,967.80 : x
  2. Step 2: Convert to fraction form
    524,279.80/785,253.30 = 430,967.80/x
  3. Step 3: Cross multiply
    524,279.80x = 785,253.30 × 430,967.80
  4. Step 4: Simplify right side
    524,279.80x = 338,418,887,143.74
  5. Step 5: Solve for x
    x = 338,418,887,143.74/524,279.80
  6. Step 6: Final answer
    x = 645,492.90

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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.