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Finding the Fourth Proportional to 529,355.76, 730,598.04 and 386,588.40

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Solution

The fourth proportional to 529,355.76, 730,598.04 and 386,588.40 is: 533,555.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,355.76 : 730,598.04 = 386,588.40 : x
  2. Step 2: Convert to fraction form
    529,355.76/730,598.04 = 386,588.40/x
  3. Step 3: Cross multiply
    529,355.76x = 730,598.04 × 386,588.40
  4. Step 4: Simplify right side
    529,355.76x = 282,440,727,326.74
  5. Step 5: Solve for x
    x = 282,440,727,326.74/529,355.76
  6. Step 6: Final answer
    x = 533,555.59

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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.