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Finding the Fourth Proportional to 9,011.17, 12,435 and 5,031.50

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Solution

The fourth proportional to 9,011.17, 12,435 and 5,031.50 is: 6,943.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,011.17 : 12,435 = 5,031.50 : x
  2. Step 2: Convert to fraction form
    9,011.17/12,435 = 5,031.50/x
  3. Step 3: Cross multiply
    9,011.17x = 12,435 × 5,031.50
  4. Step 4: Simplify right side
    9,011.17x = 62,566,702.50
  5. Step 5: Solve for x
    x = 62,566,702.50/9,011.17
  6. Step 6: Final answer
    x = 6,943.24

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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.