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Finding the Fourth Proportional to 636,971.16, 879,161.58 and 498,875.16

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Solution

The fourth proportional to 636,971.16, 879,161.58 and 498,875.16 is: 688,558.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,971.16 : 879,161.58 = 498,875.16 : x
  2. Step 2: Convert to fraction form
    636,971.16/879,161.58 = 498,875.16/x
  3. Step 3: Cross multiply
    636,971.16x = 879,161.58 × 498,875.16
  4. Step 4: Simplify right side
    636,971.16x = 438,591,873,888.35
  5. Step 5: Solve for x
    x = 438,591,873,888.35/636,971.16
  6. Step 6: Final answer
    x = 688,558.45

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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.