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Finding the Fourth Proportional to 618,655.23, 853,754.31 and 346,783.59

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Solution

The fourth proportional to 618,655.23, 853,754.31 and 346,783.59 is: 478,567.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,655.23 : 853,754.31 = 346,783.59 : x
  2. Step 2: Convert to fraction form
    618,655.23/853,754.31 = 346,783.59/x
  3. Step 3: Cross multiply
    618,655.23x = 853,754.31 × 346,783.59
  4. Step 4: Simplify right side
    618,655.23x = 296,067,984,599.77
  5. Step 5: Solve for x
    x = 296,067,984,599.77/618,655.23
  6. Step 6: Final answer
    x = 478,567.01

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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.