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Finding the Fourth Proportional to 618,661.80, 928,683.90 and 578,053.80

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Solution

The fourth proportional to 618,661.80, 928,683.90 and 578,053.80 is: 867,726.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,661.80 : 928,683.90 = 578,053.80 : x
  2. Step 2: Convert to fraction form
    618,661.80/928,683.90 = 578,053.80/x
  3. Step 3: Cross multiply
    618,661.80x = 928,683.90 × 578,053.80
  4. Step 4: Simplify right side
    618,661.80x = 536,829,257,393.82
  5. Step 5: Solve for x
    x = 536,829,257,393.82/618,661.80
  6. Step 6: Final answer
    x = 867,726.53

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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.