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Finding the Fourth Proportional to 74,897.94, 103,359.84 and 42,630.97

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Solution

The fourth proportional to 74,897.94, 103,359.84 and 42,630.97 is: 58,831.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,897.94 : 103,359.84 = 42,630.97 : x
  2. Step 2: Convert to fraction form
    74,897.94/103,359.84 = 42,630.97/x
  3. Step 3: Cross multiply
    74,897.94x = 103,359.84 × 42,630.97
  4. Step 4: Simplify right side
    74,897.94x = 4,406,330,238.24
  5. Step 5: Solve for x
    x = 4,406,330,238.24/74,897.94
  6. Step 6: Final answer
    x = 58,831.13

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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.