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Finding the Fourth Proportional to 618,547.15, 926,245.65 and 407,545.39

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Solution

The fourth proportional to 618,547.15, 926,245.65 and 407,545.39 is: 610,280.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,547.15 : 926,245.65 = 407,545.39 : x
  2. Step 2: Convert to fraction form
    618,547.15/926,245.65 = 407,545.39/x
  3. Step 3: Cross multiply
    618,547.15x = 926,245.65 × 407,545.39
  4. Step 4: Simplify right side
    618,547.15x = 377,487,144,665.05
  5. Step 5: Solve for x
    x = 377,487,144,665.05/618,547.15
  6. Step 6: Final answer
    x = 610,280.31

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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.