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Finding the Fourth Proportional to 335,666.48, 503,326.58 and 98,978.40

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Solution

The fourth proportional to 335,666.48, 503,326.58 and 98,978.40 is: 148,416.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,666.48 : 503,326.58 = 98,978.40 : x
  2. Step 2: Convert to fraction form
    335,666.48/503,326.58 = 98,978.40/x
  3. Step 3: Cross multiply
    335,666.48x = 503,326.58 × 98,978.40
  4. Step 4: Simplify right side
    335,666.48x = 49,818,459,070.98
  5. Step 5: Solve for x
    x = 49,818,459,070.98/335,666.48
  6. Step 6: Final answer
    x = 148,416.55

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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.