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Finding the Fourth Proportional to 935,688, 1,291,170.96 and 553,647.84

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Solution

The fourth proportional to 935,688, 1,291,170.96 and 553,647.84 is: 763,987.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,688 : 1,291,170.96 = 553,647.84 : x
  2. Step 2: Convert to fraction form
    935,688/1,291,170.96 = 553,647.84/x
  3. Step 3: Cross multiply
    935,688x = 1,291,170.96 × 553,647.84
  4. Step 4: Simplify right side
    935,688x = 714,854,013,074.73
  5. Step 5: Solve for x
    x = 714,854,013,074.73/935,688
  6. Step 6: Final answer
    x = 763,987.58

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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.