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Finding the Fourth Proportional to 111,411.08, 153,737.64 and 65,465.86

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Solution

The fourth proportional to 111,411.08, 153,737.64 and 65,465.86 is: 90,337.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,411.08 : 153,737.64 = 65,465.86 : x
  2. Step 2: Convert to fraction form
    111,411.08/153,737.64 = 65,465.86/x
  3. Step 3: Cross multiply
    111,411.08x = 153,737.64 × 65,465.86
  4. Step 4: Simplify right side
    111,411.08x = 10,064,566,816.97
  5. Step 5: Solve for x
    x = 10,064,566,816.97/111,411.08
  6. Step 6: Final answer
    x = 90,337.22

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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.