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Finding the Fourth Proportional to 518,941.35, 778,407.36 and 163,955.36

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Solution

The fourth proportional to 518,941.35, 778,407.36 and 163,955.36 is: 245,931.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,941.35 : 778,407.36 = 163,955.36 : x
  2. Step 2: Convert to fraction form
    518,941.35/778,407.36 = 163,955.36/x
  3. Step 3: Cross multiply
    518,941.35x = 778,407.36 × 163,955.36
  4. Step 4: Simplify right side
    518,941.35x = 127,624,055,043.41
  5. Step 5: Solve for x
    x = 127,624,055,043.41/518,941.35
  6. Step 6: Final answer
    x = 245,931.56

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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.