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Finding the Fourth Proportional to 715,448.68, 986,332.52 and 570,745.50

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Solution

The fourth proportional to 715,448.68, 986,332.52 and 570,745.50 is: 786,841.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,448.68 : 986,332.52 = 570,745.50 : x
  2. Step 2: Convert to fraction form
    715,448.68/986,332.52 = 570,745.50/x
  3. Step 3: Cross multiply
    715,448.68x = 986,332.52 × 570,745.50
  4. Step 4: Simplify right side
    715,448.68x = 562,944,847,293.66
  5. Step 5: Solve for x
    x = 562,944,847,293.66/715,448.68
  6. Step 6: Final answer
    x = 786,841.69

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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.