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Finding the Fourth Proportional to 656,434, 979,498.66 and 616,309.84

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Solution

The fourth proportional to 656,434, 979,498.66 and 616,309.84 is: 919,627.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,434 : 979,498.66 = 616,309.84 : x
  2. Step 2: Convert to fraction form
    656,434/979,498.66 = 616,309.84/x
  3. Step 3: Cross multiply
    656,434x = 979,498.66 × 616,309.84
  4. Step 4: Simplify right side
    656,434x = 603,674,662,424.81
  5. Step 5: Solve for x
    x = 603,674,662,424.81/656,434
  6. Step 6: Final answer
    x = 919,627.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.