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Finding the Fourth Proportional to 93,465.99, 128,981.43 and 53,178.89

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Solution

The fourth proportional to 93,465.99, 128,981.43 and 53,178.89 is: 73,385.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,465.99 : 128,981.43 = 53,178.89 : x
  2. Step 2: Convert to fraction form
    93,465.99/128,981.43 = 53,178.89/x
  3. Step 3: Cross multiply
    93,465.99x = 128,981.43 × 53,178.89
  4. Step 4: Simplify right side
    93,465.99x = 6,859,088,633.11
  5. Step 5: Solve for x
    x = 6,859,088,633.11/93,465.99
  6. Step 6: Final answer
    x = 73,385.93

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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.