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Finding the Fourth Proportional to 860,587.84, 1,187,640.48 and 473,420.32

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Solution

The fourth proportional to 860,587.84, 1,187,640.48 and 473,420.32 is: 653,336.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,587.84 : 1,187,640.48 = 473,420.32 : x
  2. Step 2: Convert to fraction form
    860,587.84/1,187,640.48 = 473,420.32/x
  3. Step 3: Cross multiply
    860,587.84x = 1,187,640.48 × 473,420.32
  4. Step 4: Simplify right side
    860,587.84x = 562,253,136,086.55
  5. Step 5: Solve for x
    x = 562,253,136,086.55/860,587.84
  6. Step 6: Final answer
    x = 653,336.14

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Double scale
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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.