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Finding the Fourth Proportional to 139,253.77, 192,070.87 and 127,805.64

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Solution

The fourth proportional to 139,253.77, 192,070.87 and 127,805.64 is: 176,280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,253.77 : 192,070.87 = 127,805.64 : x
  2. Step 2: Convert to fraction form
    139,253.77/192,070.87 = 127,805.64/x
  3. Step 3: Cross multiply
    139,253.77x = 192,070.87 × 127,805.64
  4. Step 4: Simplify right side
    139,253.77x = 24,547,740,465.71
  5. Step 5: Solve for x
    x = 24,547,740,465.71/139,253.77
  6. Step 6: Final answer
    x = 176,280.62

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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.