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Finding the Fourth Proportional to 623,381.58, 860,064.03 and 381,411.90

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Solution

The fourth proportional to 623,381.58, 860,064.03 and 381,411.90 is: 526,224.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,381.58 : 860,064.03 = 381,411.90 : x
  2. Step 2: Convert to fraction form
    623,381.58/860,064.03 = 381,411.90/x
  3. Step 3: Cross multiply
    623,381.58x = 860,064.03 × 381,411.90
  4. Step 4: Simplify right side
    623,381.58x = 328,038,655,803.96
  5. Step 5: Solve for x
    x = 328,038,655,803.96/623,381.58
  6. Step 6: Final answer
    x = 526,224.49

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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.