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Finding the Fourth Proportional to 618,359.40, 853,752.24 and 386,140.14

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Solution

The fourth proportional to 618,359.40, 853,752.24 and 386,140.14 is: 533,133.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,359.40 : 853,752.24 = 386,140.14 : x
  2. Step 2: Convert to fraction form
    618,359.40/853,752.24 = 386,140.14/x
  3. Step 3: Cross multiply
    618,359.40x = 853,752.24 × 386,140.14
  4. Step 4: Simplify right side
    618,359.40x = 329,668,009,478.91
  5. Step 5: Solve for x
    x = 329,668,009,478.91/618,359.40
  6. Step 6: Final answer
    x = 533,133.34

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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.