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Finding the Fourth Proportional to 93,271.64, 128,758.07 and 55,018.31

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Solution

The fourth proportional to 93,271.64, 128,758.07 and 55,018.31 is: 75,950.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,271.64 : 128,758.07 = 55,018.31 : x
  2. Step 2: Convert to fraction form
    93,271.64/128,758.07 = 55,018.31/x
  3. Step 3: Cross multiply
    93,271.64x = 128,758.07 × 55,018.31
  4. Step 4: Simplify right side
    93,271.64x = 7,084,050,904.02
  5. Step 5: Solve for x
    x = 7,084,050,904.02/93,271.64
  6. Step 6: Final answer
    x = 75,950.75

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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.