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Finding the Fourth Proportional to 85,873.77, 128,831.11 and 35,925.93

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Solution

The fourth proportional to 85,873.77, 128,831.11 and 35,925.93 is: 53,897.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,873.77 : 128,831.11 = 35,925.93 : x
  2. Step 2: Convert to fraction form
    85,873.77/128,831.11 = 35,925.93/x
  3. Step 3: Cross multiply
    85,873.77x = 128,831.11 × 35,925.93
  4. Step 4: Simplify right side
    85,873.77x = 4,628,377,349.87
  5. Step 5: Solve for x
    x = 4,628,377,349.87/85,873.77
  6. Step 6: Final answer
    x = 53,897.45

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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.