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Finding the Fourth Proportional to 518,667.80, 778,001.70 and 124,683.80

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Solution

The fourth proportional to 518,667.80, 778,001.70 and 124,683.80 is: 187,025.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,667.80 : 778,001.70 = 124,683.80 : x
  2. Step 2: Convert to fraction form
    518,667.80/778,001.70 = 124,683.80/x
  3. Step 3: Cross multiply
    518,667.80x = 778,001.70 × 124,683.80
  4. Step 4: Simplify right side
    518,667.80x = 97,004,208,362.46
  5. Step 5: Solve for x
    x = 97,004,208,362.46/518,667.80
  6. Step 6: Final answer
    x = 187,025.70

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Similar ratio
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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.