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Finding the Fourth Proportional to 15,460.61, 21,335.65 and 8,746.10

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Solution

The fourth proportional to 15,460.61, 21,335.65 and 8,746.10 is: 12,069.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,460.61 : 21,335.65 = 8,746.10 : x
  2. Step 2: Convert to fraction form
    15,460.61/21,335.65 = 8,746.10/x
  3. Step 3: Cross multiply
    15,460.61x = 21,335.65 × 8,746.10
  4. Step 4: Simplify right side
    15,460.61x = 186,603,599.92
  5. Step 5: Solve for x
    x = 186,603,599.92/15,460.61
  6. Step 6: Final answer
    x = 12,069.61

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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.