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Finding the Fourth Proportional to 645,775.47, 968,699.61 and 196,510.95

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Solution

The fourth proportional to 645,775.47, 968,699.61 and 196,510.95 is: 294,777.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,775.47 : 968,699.61 = 196,510.95 : x
  2. Step 2: Convert to fraction form
    645,775.47/968,699.61 = 196,510.95/x
  3. Step 3: Cross multiply
    645,775.47x = 968,699.61 × 196,510.95
  4. Step 4: Simplify right side
    645,775.47x = 190,360,080,625.73
  5. Step 5: Solve for x
    x = 190,360,080,625.73/645,775.47
  6. Step 6: Final answer
    x = 294,777.50

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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.