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Finding the Fourth Proportional to 623,874.51, 860,165.55 and 520,656.57

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Solution

The fourth proportional to 623,874.51, 860,165.55 and 520,656.57 is: 717,854.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,874.51 : 860,165.55 = 520,656.57 : x
  2. Step 2: Convert to fraction form
    623,874.51/860,165.55 = 520,656.57/x
  3. Step 3: Cross multiply
    623,874.51x = 860,165.55 × 520,656.57
  4. Step 4: Simplify right side
    623,874.51x = 447,850,844,895.16
  5. Step 5: Solve for x
    x = 447,850,844,895.16/623,874.51
  6. Step 6: Final answer
    x = 717,854.05

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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.