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Finding the Fourth Proportional to 111,407.66, 153,739.84 and 63,657.93

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Solution

The fourth proportional to 111,407.66, 153,739.84 and 63,657.93 is: 87,846.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,407.66 : 153,739.84 = 63,657.93 : x
  2. Step 2: Convert to fraction form
    111,407.66/153,739.84 = 63,657.93/x
  3. Step 3: Cross multiply
    111,407.66x = 153,739.84 × 63,657.93
  4. Step 4: Simplify right side
    111,407.66x = 9,786,759,916.82
  5. Step 5: Solve for x
    x = 9,786,759,916.82/111,407.66
  6. Step 6: Final answer
    x = 87,846.38

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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.