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Finding the Fourth Proportional to 705,989.61, 974,272.05 and 383,700.47

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Solution

The fourth proportional to 705,989.61, 974,272.05 and 383,700.47 is: 529,510.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,989.61 : 974,272.05 = 383,700.47 : x
  2. Step 2: Convert to fraction form
    705,989.61/974,272.05 = 383,700.47/x
  3. Step 3: Cross multiply
    705,989.61x = 974,272.05 × 383,700.47
  4. Step 4: Simplify right side
    705,989.61x = 373,828,638,621.50
  5. Step 5: Solve for x
    x = 373,828,638,621.50/705,989.61
  6. Step 6: Final answer
    x = 529,510.11

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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.