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Finding the Fourth Proportional to 936,134.72, 1,291,862 and 506,413.78

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Solution

The fourth proportional to 936,134.72, 1,291,862 and 506,413.78 is: 698,848.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,134.72 : 1,291,862 = 506,413.78 : x
  2. Step 2: Convert to fraction form
    936,134.72/1,291,862 = 506,413.78/x
  3. Step 3: Cross multiply
    936,134.72x = 1,291,862 × 506,413.78
  4. Step 4: Simplify right side
    936,134.72x = 654,216,718,658.36
  5. Step 5: Solve for x
    x = 654,216,718,658.36/936,134.72
  6. Step 6: Final answer
    x = 698,848.90

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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.