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Finding the Fourth Proportional to 191,312.10, 286,838.55 and 97,740.90

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Solution

The fourth proportional to 191,312.10, 286,838.55 and 97,740.90 is: 146,545.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,312.10 : 286,838.55 = 97,740.90 : x
  2. Step 2: Convert to fraction form
    191,312.10/286,838.55 = 97,740.90/x
  3. Step 3: Cross multiply
    191,312.10x = 286,838.55 × 97,740.90
  4. Step 4: Simplify right side
    191,312.10x = 28,035,858,031.70
  5. Step 5: Solve for x
    x = 28,035,858,031.70/191,312.10
  6. Step 6: Final answer
    x = 146,545.14

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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.