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Finding the Fourth Proportional to 21,599.84, 29,775.12 and 16,875.92

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Solution

The fourth proportional to 21,599.84, 29,775.12 and 16,875.92 is: 23,263.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,599.84 : 29,775.12 = 16,875.92 : x
  2. Step 2: Convert to fraction form
    21,599.84/29,775.12 = 16,875.92/x
  3. Step 3: Cross multiply
    21,599.84x = 29,775.12 × 16,875.92
  4. Step 4: Simplify right side
    21,599.84x = 502,482,543.11
  5. Step 5: Solve for x
    x = 502,482,543.11/21,599.84
  6. Step 6: Final answer
    x = 23,263.25

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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.