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Finding the Fourth Proportional to 417,831.16, 626,666.58 and 118,239.40

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Solution

The fourth proportional to 417,831.16, 626,666.58 and 118,239.40 is: 177,336.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,831.16 : 626,666.58 = 118,239.40 : x
  2. Step 2: Convert to fraction form
    417,831.16/626,666.58 = 118,239.40/x
  3. Step 3: Cross multiply
    417,831.16x = 626,666.58 × 118,239.40
  4. Step 4: Simplify right side
    417,831.16x = 74,096,680,419.25
  5. Step 5: Solve for x
    x = 74,096,680,419.25/417,831.16
  6. Step 6: Final answer
    x = 177,336.42

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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.