Home / 528,013.17-792,011.66-128,654.55

Finding the Fourth Proportional to 528,013.17, 792,011.66 and 128,654.55

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Solution

The fourth proportional to 528,013.17, 792,011.66 and 128,654.55 is: 192,979.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,013.17 : 792,011.66 = 128,654.55 : x
  2. Step 2: Convert to fraction form
    528,013.17/792,011.66 = 128,654.55/x
  3. Step 3: Cross multiply
    528,013.17x = 792,011.66 × 128,654.55
  4. Step 4: Simplify right side
    528,013.17x = 101,895,903,068.78
  5. Step 5: Solve for x
    x = 101,895,903,068.78/528,013.17
  6. Step 6: Final answer
    x = 192,979.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.