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Finding the Fourth Proportional to 626,807.61, 864,995.63 and 340,326.81

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Solution

The fourth proportional to 626,807.61, 864,995.63 and 340,326.81 is: 469,651.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,807.61 : 864,995.63 = 340,326.81 : x
  2. Step 2: Convert to fraction form
    626,807.61/864,995.63 = 340,326.81/x
  3. Step 3: Cross multiply
    626,807.61x = 864,995.63 × 340,326.81
  4. Step 4: Simplify right side
    626,807.61x = 294,381,201,720.21
  5. Step 5: Solve for x
    x = 294,381,201,720.21/626,807.61
  6. Step 6: Final answer
    x = 469,651.61

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1.5x scale

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.