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Finding the Fourth Proportional to 298,700.64, 448,061.90 and 99,038.48

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Solution

The fourth proportional to 298,700.64, 448,061.90 and 99,038.48 is: 148,561.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,700.64 : 448,061.90 = 99,038.48 : x
  2. Step 2: Convert to fraction form
    298,700.64/448,061.90 = 99,038.48/x
  3. Step 3: Cross multiply
    298,700.64x = 448,061.90 × 99,038.48
  4. Step 4: Simplify right side
    298,700.64x = 44,375,369,521.91
  5. Step 5: Solve for x
    x = 44,375,369,521.91/298,700.64
  6. Step 6: Final answer
    x = 148,561.35

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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.