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Finding the Fourth Proportional to 111,543.18, 153,930.15 and 63,798.54

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Solution

The fourth proportional to 111,543.18, 153,930.15 and 63,798.54 is: 88,042.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,543.18 : 153,930.15 = 63,798.54 : x
  2. Step 2: Convert to fraction form
    111,543.18/153,930.15 = 63,798.54/x
  3. Step 3: Cross multiply
    111,543.18x = 153,930.15 × 63,798.54
  4. Step 4: Simplify right side
    111,543.18x = 9,820,518,831.98
  5. Step 5: Solve for x
    x = 9,820,518,831.98/111,543.18
  6. Step 6: Final answer
    x = 88,042.31

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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.