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Finding the Fourth Proportional to 661,106.67, 911,854.56 and 606,831.13

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Solution

The fourth proportional to 661,106.67, 911,854.56 and 606,831.13 is: 836,993.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,106.67 : 911,854.56 = 606,831.13 : x
  2. Step 2: Convert to fraction form
    661,106.67/911,854.56 = 606,831.13/x
  3. Step 3: Cross multiply
    661,106.67x = 911,854.56 × 606,831.13
  4. Step 4: Simplify right side
    661,106.67x = 553,341,733,040.45
  5. Step 5: Solve for x
    x = 553,341,733,040.45/661,106.67
  6. Step 6: Final answer
    x = 836,993.12

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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.