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Finding the Fourth Proportional to 636,419.16, 877,379.85 and 507,794.40

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Solution

The fourth proportional to 636,419.16, 877,379.85 and 507,794.40 is: 700,055.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,419.16 : 877,379.85 = 507,794.40 : x
  2. Step 2: Convert to fraction form
    636,419.16/877,379.85 = 507,794.40/x
  3. Step 3: Cross multiply
    636,419.16x = 877,379.85 × 507,794.40
  4. Step 4: Simplify right side
    636,419.16x = 445,528,574,502.84
  5. Step 5: Solve for x
    x = 445,528,574,502.84/636,419.16
  6. Step 6: Final answer
    x = 700,055.25

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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.