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Finding the Fourth Proportional to 25,389.84, 35,038.64 and 14,211.84

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Solution

The fourth proportional to 25,389.84, 35,038.64 and 14,211.84 is: 19,612.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,389.84 : 35,038.64 = 14,211.84 : x
  2. Step 2: Convert to fraction form
    25,389.84/35,038.64 = 14,211.84/x
  3. Step 3: Cross multiply
    25,389.84x = 35,038.64 × 14,211.84
  4. Step 4: Simplify right side
    25,389.84x = 497,963,545.50
  5. Step 5: Solve for x
    x = 497,963,545.50/25,389.84
  6. Step 6: Final answer
    x = 19,612.71

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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.