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Finding the Fourth Proportional to 35,607.69, 53,411.65 and 13,415.11

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Solution

The fourth proportional to 35,607.69, 53,411.65 and 13,415.11 is: 20,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,607.69 : 53,411.65 = 13,415.11 : x
  2. Step 2: Convert to fraction form
    35,607.69/53,411.65 = 13,415.11/x
  3. Step 3: Cross multiply
    35,607.69x = 53,411.65 × 13,415.11
  4. Step 4: Simplify right side
    35,607.69x = 716,522,859.44
  5. Step 5: Solve for x
    x = 716,522,859.44/35,607.69
  6. Step 6: Final answer
    x = 20,122.70

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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.