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Finding the Fourth Proportional to 93,307.13, 128,763.87 and 53,020.94

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Solution

The fourth proportional to 93,307.13, 128,763.87 and 53,020.94 is: 73,168.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,307.13 : 128,763.87 = 53,020.94 : x
  2. Step 2: Convert to fraction form
    93,307.13/128,763.87 = 53,020.94/x
  3. Step 3: Cross multiply
    93,307.13x = 128,763.87 × 53,020.94
  4. Step 4: Simplify right side
    93,307.13x = 6,827,180,781.62
  5. Step 5: Solve for x
    x = 6,827,180,781.62/93,307.13
  6. Step 6: Final answer
    x = 73,168.91

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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.