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Finding the Fourth Proportional to 93,972.04, 129,718.74 and 56,239

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Solution

The fourth proportional to 93,972.04, 129,718.74 and 56,239 is: 77,632.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,972.04 : 129,718.74 = 56,239 : x
  2. Step 2: Convert to fraction form
    93,972.04/129,718.74 = 56,239/x
  3. Step 3: Cross multiply
    93,972.04x = 129,718.74 × 56,239
  4. Step 4: Simplify right side
    93,972.04x = 7,295,252,218.86
  5. Step 5: Solve for x
    x = 7,295,252,218.86/93,972.04
  6. Step 6: Final answer
    x = 77,632.16

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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.