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Finding the Fourth Proportional to 35,411.80, 53,117.70 and 15,669.40

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Solution

The fourth proportional to 35,411.80, 53,117.70 and 15,669.40 is: 23,504.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,411.80 : 53,117.70 = 15,669.40 : x
  2. Step 2: Convert to fraction form
    35,411.80/53,117.70 = 15,669.40/x
  3. Step 3: Cross multiply
    35,411.80x = 53,117.70 × 15,669.40
  4. Step 4: Simplify right side
    35,411.80x = 832,322,488.38
  5. Step 5: Solve for x
    x = 832,322,488.38/35,411.80
  6. Step 6: Final answer
    x = 23,504.10

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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.