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Finding the Fourth Proportional to 60,602.70, 90,831.15 and 31,005.30

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Solution

The fourth proportional to 60,602.70, 90,831.15 and 31,005.30 is: 46,470.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,602.70 : 90,831.15 = 31,005.30 : x
  2. Step 2: Convert to fraction form
    60,602.70/90,831.15 = 31,005.30/x
  3. Step 3: Cross multiply
    60,602.70x = 90,831.15 × 31,005.30
  4. Step 4: Simplify right side
    60,602.70x = 2,816,247,055.10
  5. Step 5: Solve for x
    x = 2,816,247,055.10/60,602.70
  6. Step 6: Final answer
    x = 46,470.65

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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.