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Finding the Fourth Proportional to 528,014.17, 792,013.15 and 128,655.55

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Solution

The fourth proportional to 528,014.17, 792,013.15 and 128,655.55 is: 192,981.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,014.17 : 792,013.15 = 128,655.55 : x
  2. Step 2: Convert to fraction form
    528,014.17/792,013.15 = 128,655.55/x
  3. Step 3: Cross multiply
    528,014.17x = 792,013.15 × 128,655.55
  4. Step 4: Simplify right side
    528,014.17x = 101,896,887,420.48
  5. Step 5: Solve for x
    x = 101,896,887,420.48/528,014.17
  6. Step 6: Final answer
    x = 192,981.35

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1.5x scale

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.