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Finding the Fourth Proportional to 626,509.71, 864,561.47 and 340,024.05

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Solution

The fourth proportional to 626,509.71, 864,561.47 and 340,024.05 is: 469,221.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,509.71 : 864,561.47 = 340,024.05 : x
  2. Step 2: Convert to fraction form
    626,509.71/864,561.47 = 340,024.05/x
  3. Step 3: Cross multiply
    626,509.71x = 864,561.47 × 340,024.05
  4. Step 4: Simplify right side
    626,509.71x = 293,971,690,803.23
  5. Step 5: Solve for x
    x = 293,971,690,803.23/626,509.71
  6. Step 6: Final answer
    x = 469,221.28

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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.