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Finding the Fourth Proportional to 173,312.80, 260,055.60 and 98,490.40

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Solution

The fourth proportional to 173,312.80, 260,055.60 and 98,490.40 is: 147,784.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,312.80 : 260,055.60 = 98,490.40 : x
  2. Step 2: Convert to fraction form
    173,312.80/260,055.60 = 98,490.40/x
  3. Step 3: Cross multiply
    173,312.80x = 260,055.60 × 98,490.40
  4. Step 4: Simplify right side
    173,312.80x = 25,612,980,066.24
  5. Step 5: Solve for x
    x = 25,612,980,066.24/173,312.80
  6. Step 6: Final answer
    x = 147,784.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.