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Finding the Fourth Proportional to 528,999.27, 730,012.14 and 299,601.20

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Solution

The fourth proportional to 528,999.27, 730,012.14 and 299,601.20 is: 413,445.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,999.27 : 730,012.14 = 299,601.20 : x
  2. Step 2: Convert to fraction form
    528,999.27/730,012.14 = 299,601.20/x
  3. Step 3: Cross multiply
    528,999.27x = 730,012.14 × 299,601.20
  4. Step 4: Simplify right side
    528,999.27x = 218,712,509,508.51
  5. Step 5: Solve for x
    x = 218,712,509,508.51/528,999.27
  6. Step 6: Final answer
    x = 413,445.77

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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.