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Finding the Fourth Proportional to 860,644.60, 1,187,689.62 and 473,465.48

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Solution

The fourth proportional to 860,644.60, 1,187,689.62 and 473,465.48 is: 653,382.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,644.60 : 1,187,689.62 = 473,465.48 : x
  2. Step 2: Convert to fraction form
    860,644.60/1,187,689.62 = 473,465.48/x
  3. Step 3: Cross multiply
    860,644.60x = 1,187,689.62 × 473,465.48
  4. Step 4: Simplify right side
    860,644.60x = 562,330,036,024.32
  5. Step 5: Solve for x
    x = 562,330,036,024.32/860,644.60
  6. Step 6: Final answer
    x = 653,382.40

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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.